That might not be such a good decision. You'd lose your severance pay, plus any unemployment benefits. True, it would send a message, and make the training more difficult (less trainers). But quitting would be tough if you're a family man.
It might be better to stay on and do the training. And do the training with less, shall we say, enthusiasm. If you were to forget to cover a few key points, or if you were to misplace a few important manuals, who could blame you? After all, we're all getting older.
Good point.
I’m an IT guy... I could very easily accidentally train my replacement to screw up the first 10 systems he touches...