Cats have managed to tap into that part of humans that love and want to take care of babies. Cats even mimic the pitch of a crying baby, because they figure out that's what humans respond to. It IS that they are so cute. Worshiping cats or looking at pics of them for hours a day probably both come from the same drive, just manifested differently.
Hahaha, no. Thinking cats are awesome isn't quite the same as worshipping them. Incidentally, while cats are adorable, they're actually awesome because they are adorable fuzzy killing machines who assume you're there just to serve their whims.