Things to do to make her want to leave:

-Fake a terminal illness.
-Find a new "boyfriend".
-Make a pass at her mom.
-Make a pass at her dad.
-Leave some artfully constructed letters lying around from your 'other' wife
and kids.
-Leave the toilet seat up just one time - that usually works.
-Tell her you want to become a priest.
-Join a cult.
-Ask her a whole bunch of times how much her stuff is worth.
-Mail her a fake letter from a past girlfriend warning her about your
dangerous mental instability.  Then start showing the symptoms.

Or, best yet, tell her what you are actually thinking.  One quick peek into
the mind of a man, and she will never stop slapping you.

;-)