Golly: in my case it's because I feel that I've matured enough as an artist that I can - and want to take full personal credit (and responsibility) for my works, and allow our community to know who I am! I admit: it's a large part pride, but I think its permissible.
Yea, I didn't ment it as something Im against, just wondering aloud. Colo seems to be doing so today as well.