I'm not voting, but this discussion finally convinced me to try buzzing things down there. I started out shaving smooth, but I think I'll backpedal to trimming in the future. Why? It's the whole package deal. I'm mildly hairy over the rest of my body, and it just looks bizarre to have the hair end where my underwear begins.
I do like the trimmed look, though (I did it when my wife was on a business trip, so I don't have her feedback yet). In fact I liked it so much I went ahead and did the back, too.
For the girls and guys who like their guys natural, I'm interested to find out what you like about it.