Whenever I find one that's better than the one I currently have at the time.

every few weeks on average though I've kept some for months

I've decided to never change my avatar ever again. With the simple goal of becoming more recognizable.

I look at guys like Nikkom, D21Lewis, Torrilian etc. They never change their avatars and have become iconic members of the forum. This wouldn't have been possible if they chop and changed their avatar every dam week.

Oh and my avatar was hand drawn by a friend of mine and i really like it!

I've been using this avatar for over a decade.

Are you using that 2009-2011 = 2 decades logic or do you mean on other sites before chartz?

Whenever Im able to take a new picture, which is usually every 3-4months.

Never. My current avatar is very much me. I once got tired of using some stupid generic avatars I got from Google Images and decided to make my own. This is what I came up with, I like it, and it's unique.

Other sites.

Had this one since about 3 months after I joined. Only change on special occasions such as Christmas and then switch back again, so I guess that makes it twice a year?

I never change my avatars. for example my FB avatar is 5,6 years old.