SSS, please explain your problem? It works for me..
Avatars also get in the way of search engine optimisation. The pages are filled full of crap meaningless images and it makes our decent images hard to distinguish from the ten thousand user avatar images.
Sorry to keep it clean Avatars are out. The key thing is the information, you can go for your life in your user profile section.
Whenever I see a web forum thread full of avatars, I usually assume that its a page full of people crapping on about the price of bread or anything useless. I like to think that our forums are more clean and pure information based. I think it keeps it looking a lot more professional.
With avatars, you also get the usual idiots who use a picture of an "up yours" finger, or an ass or something stupid and unrelated to micras. There's no way of controlling that except manually checking each one by hand which is a lot of unneccessary maintenance.