I can't stand them personally. They clutter everything up and get annoying if you're just trying to read a thread or talk to somebody. That's the same reason I removed the thread title captions from under posted images. It's especially bad when you allow pics, because then you have to see some dude's sparkly dancing chocobo fifteen times on every page and it starts looking like geocities in here.
But that said, I didn't build this forum for me, it's for you guys. If I get a lot of people begging for them I can put it to a vote at some point down the road. I can limit what's allowed, so I'm not entirely opposed to them if it's reasonable and text-only.