13 revolvers, 4 semi-auto pistols, 2 semi-auto rifles, 1 pump-action shotgun.
I like revolvers more (and S&W revolvers, at that) because. Just because. They look more "classic" (although a good 1911 would certainly be right up there), fit me better, yadda yadda yadda.
I also like bucking the trend--all of my shooting buddies are semi-auto guys, even in competition. I like being that one guy (young guy at that, too--I'm 26 and sometimes I still get mistaken for a college kid) crankin' and yankin' on the line.