Since this is apparently both a flame war and a test of indecency thread...
Kill 3e. Its like the best and worst of the crazy girlfriend. Seems like a whole lotta fun, then suddenly has you doing a bunch of overly elaborate work to keep for setting her off into a psychotic rage/tpk. Then you discover she's also seeing all these other gamers through a weird "open" relationship.
Marry 4e. I guess, though I'd rather get to know it a bit better first.
Make whoopie with 2e. Can I make it a paper bag whoopie? There's some great scenery in terms of campaign settings, but reading the phb drives me crazy.