Such a toss up...
Lust/Gluttony/Wrath.
There are few things I enjoy more than having sex (and associated activities).
However, that sort of thing is pretty much limited to time I'm with my girlfriend and it's opportune. I eat with everyone. Being in the southeast, eating is just sort of the generic social past time. And there's always someplace open.
But I'm a vengeful and malicious asshole. There are people I want to wrong me just so I can have a good excuse for getting back at them. I think I'll stop with that, but the amount of talking/rambling I could do on the subject of wrath makes me feel like it may as well be my "final answer."