We weren't together near long enough for her to get half of my retirement, but when she proposed I dip into retirement savings to give her the money she initially wanted, I about went through the roof. That's where talking with the lawyer was worth the small amount it had cost me (we never went to court, but on this issue I was prepared to). It's definitely frustrating.
Reading your reply to JustStunned, I'm reminded by a post from Michele herself - I'll paraphrase it because I forget exactly where I saw it: if you still have to wonder whether or not you're done, then you're not done.
Me: 36 Her: 35 Together 7/09 Married 8/7/10 Separate rooms since at least April 11 "I've decided I want a divorce" 12/5/11 She moves out of state/files 2/7/12 Dissolution final 5/12