If WinCustomize hadn't come along when Skinz Died, I'm pretty certain I would have quit graphics and skinning. I, for one, am grateful to the moderation process at Skinz, it really does make you work harder and gives you a sense of satisfaction when you pass moderation. Incidentally, not many people know, but I was one of the last people to stay with Skinz.org in it's dying days, continuing to post on the board and uploading wallpapers. I just didn't want it to end, and I was sad when I had to finally accept it was gone.
Thankfully, WinCustomize has filled the void admirably, and if you can make it here,(with wallpapers) you definitely are doing something right as mentioned in an earlier post, and you will feel that sense of achievement unavailable anywhere else that doesn't moderate images.