Here are the facts you have given:
1. You have a long term marriage as defined by your state statutes.
2. You clearly have more earning power than he does.
3. He could not maintain the current standard of living that he is accustom to without some of your money.
4. You married him and allowed his behaviour for 12 years that you now object to.
Sounds like you don't want to play by the same rules when wives ask for and receive alimony.