Whether it's RPG, MMORPG, or even some modern-day shooters, you're always going to be choosing whether or not you equip a particular piece of gear because of its effectiveness or its style points.
Personally, I'm guilty of trashing something just because it doesn't look good, but sometimes that ugly helmet is significantly better than anything else you could ever find and choosing not to equip it reduces positive outlook towards l33t gamers by 35%. Ultimately, it comes down to the player choice. I've seen people willing to scrap their sexy plate armor for leather spandex just because it gives you +2 stats somewhere. On the other hand, I've seen those who say "be gone!" to the leopard, skinny-fit jacket unless that's their style of course...
So how about you? Tell us reasons as to why you choose what to wear on your virtual gaming avatars. Let's try and ignore gear obtained through natural progression since equipping the next item is almost a given... or is it? (YELLOW DRESS!)