It's so easy to make one, does it make sense? But think about it, Bitcoin and Litecoin are the same thing.
They're not the same thing. They've got different PoW algorithms and different average block times. Litecoin is an experiment based on the experiment Bitcoin, with adjusted parameters. That's about it. But yeah, we do have too many altcoins. Just take a look at that sub-forum, it's madness there! Most coins are just a pump and dump anyways!