I came from Linux to Mac about 4-5 months ago. As you might know, in Linux you can change almost everything. Apple don’t go that way with Macs. You take it “as is” and everything you can easily change in GUI is wallpaper. Oh, okay, you can move Dock to the left or right side of the screen ;)
That’s why I am crazy about wallpapers, just like I was about changing GUI on Linux. So, you can like it or not, I will post some awesome wallpaper from time to time.