Creatively and personally, I'm definitely a hoarder. Photos, music, old clothes, books I've read, old shoes. I try to be ruthless but I'm not good at getting rid of these things; they may have become obsolete but at a mere glance they all link me immediately to a specific time or place in my life.
Photographically, however, I'm indefinitely a hoarder. I won't be stopping anytime soon!
I take lots of photographs and I keep them - the good ones, the bad ones, the blurry ones and of course the ones that I might just change my opinion on. This doesn't mean they aren't organised, backed-up and in folders as they are (mostly!). I just don't delete the vast majority of images I take for a very long time and don't see this changing.