I'll admit to changing my avatar, first my dog, then "Big Al" (the mascot of a 1970s era Buffalo radio station), and now Mr. Natural. No changes are planned for the near future.
Just an aside ... I've been adding a bunch of generic avatars over the past several days, and I'll be adding more in the coming weeks. Users can choose 'em from the control panel, and they can still upload their own. Please, please, please, though ... nothing animated. We can't have everybody's name followed by something like this ...
or this
Unfortunately, Redneck El Guapo isn't among the stock avatars. (Yes, there's a very subtle change in the image.)