Because we've all seen it before and it's only funny the first time we see it. I;m not going to start looking at people's avatars just because they use one of those. I've seen it, I laughed, and I don't need to keep seeing it all over the place.
Way to miss the point guys.
You'll laugh at an avatar once. If you laugh more you have bad memory. With a car (not to mention it's a picture you've never seen anywhere but under my name) you can drool at it every time you see it. How funny do you think you are when you crop these out of funny pics and size them down? At least I took the picture myself and photoshopped it to make it (and I'll admit it's not that great, but I'm planning to change it sooner or later).
