Hell why do people do a lot of things? Cause we can. All it is another form of body modification, which manifests itself in many ways from simple stuff from hair styles, wearing make-up, earings, whatever to more extreme things like this. I say go for it if not really hurting others. I don't particularly like titties that big, but I do find them interesting in freakish way.
ken, i totally get that and i don't really care that someone does it. i come from a much more practical stand point. obviously, you're not a chick and haven't had to deal w/the hassles of a) finding a bra that really fits, b)a sore back c)clothes that fit, d)messing w/your golf swing.
seriously, those things just get in the way of life. not to mention the unsightly scars