"in terms of guaranteed hours - lets say you are store near college area. you want your manager to guarantee you hours in summer and fall and change nothing? Thats dumb policy for a retail business.
You will end up being overstaffed and unprofitable causing you to loose your job."

No, they could change the hours to be compatible with the workers that work there and that includes the parts of the year some people won't be able to work full time. Guaranteed hours means guaranteed for the people that want them.

"I loved the flexibility of starbucks. You can give a two week notice for time off. Ask other partners from other stores for you and look for shifts at busier stores while it was slow at my store."

Nothing changes that as far as I can tell. No one is stopping you from doing that. There will still be part-time workers. They just want the option for full-time hours for the people who need it. Starbucks makes hundreds of millions in profits and can easily provide that without seriously harming the rest of the workers. Besides, those part-timers that this could supposedly harm could join the union and demand they get what they need. See the benefits of organizing?
Unless you can provide an example of people being harmed, there isn't much further we can say.

"Yeah IWW has been around for 100 years but it never had any appeal or membership."

Really? Do some research. The IWW has had as many as 100,000 members at the height of past labor struggles. It also organized with other unions to win you rights that you enjoy today such as 8 hours work days and decent working conditions. It's current lack of membership is exactly in line with the fall of labor, in general. With action like this it can grow again to what it once was.

"And while you can claim that its great you are so unconventional, if your health insurance is taken away, your discounts, free coffee, and other stuff who in your so unconventional union will fight for those things? Will different stores have different stuff since you are all leaders but usually some leaders are more skilled then others."

If those things are taken away the only people that WILL fight for them would probably be the union. You're virtually powerless if you're alone.

A union would fight in solidarity for those benefits. If one store has them, the other unionized stores would be pushed to have them. Again, if you're by yourself you pretty much just have to take what you're given.

You should familiarize yourself with the history and importance of labor struggle before bad-mouthing it.

"You are opening a can of worms that you might not want to open. I used to work for starbucks and it provided me with what i needed. if i didn't like it, i could have done temping and made more money. the flexibility won me over. you are trying to get rid of that. and while some of you want careers, how about those who need to work a flexible schedule to make some extra money for school or their families? I know both kinds of people and it just didn't make sense to join a union."

That's a much larger issue about unionizing (or lack thereof) in the US. I don't work at Starbucks myself so I can't speak directly for its employees. I'm sure there is a way to work around these issues as there always have been in the past. Again, it was because of unionizing that you have the rights you do and it's because of anti-union rhetoric like yours that has helped destroy the quality of life people once had.

"in terms of guaranteed hours - lets say you are store near college area. you want your manager to guarantee you hours in summer and fall and change nothing? Thats dumb policy for a retail business.
You will end up being overstaffed and unprofitable causing you to loose your job."

No, they could change the hours to be compatible with the workers that work there and that includes the parts of the year some people won't be able to work full time. Guaranteed hours means guaranteed for the people that want them.

"I loved the flexibility of starbucks. You can give a two week notice for time off. Ask other partners from other stores for you and look for shifts at busier stores while it was slow at my store."

Nothing changes that as far as I can tell. No one is stopping you from doing that. There will still be part-time workers. They just want the option for full-time hours for the people who need it. Starbucks makes hundreds of millions in profits and can easily provide that without seriously harming the rest of the workers. Besides, those part-timers that this could supposedly harm could join the union and demand they get what they need. See the benefits of organizing?
Unless you can provide an example of people being harmed, there isn't much further we can say.

"Yeah IWW has been around for 100 years but it never had any appeal or membership."

Really? Do some research. The IWW has had as many as 100,000 members at the height of past labor struggles. It also organized with other unions to win you rights that you enjoy today such as 8 hours work days and decent working conditions. It's current lack of membership is exactly in line with the fall of labor, in general. With action like this it can grow again to what it once was.

"And while you can claim that its great you are so unconventional, if your health insurance is taken away, your discounts, free coffee, and other stuff who in your so unconventional union will fight for those things? Will different stores have different stuff since you are all leaders but usually some leaders are more skilled then others."

If those things are taken away the only people that WILL fight for them would probably be the union. You're virtually powerless if you're alone.

A union would fight in solidarity for those benefits. If one store has them, the other unionized stores would be pushed to have them. Again, if you're by yourself you pretty much just have to take what you're given.

You should familiarize yourself with the history and importance of labor struggle before bad-mouthing it.

"You are opening a can of worms that you might not want to open. I used to work for starbucks and it provided me with what i needed. if i didn't like it, i could have done temping and made more money. the flexibility won me over. you are trying to get rid of that. and while some of you want careers, how about those who need to work a flexible schedule to make some extra money for school or their families? I know both kinds of people and it just didn't make sense to join a union."

That's a much larger issue about unionizing (or lack thereof) in the US. I don't work at Starbucks myself so I can't speak directly for its employees. I'm sure there is a way to work around these issues as there always have been in the past. Again, it was because of unionizing that you have the rights you do and it's because of anti-union rhetoric like yours that has helped destroy the quality of life people once had.