You have every rights to stay away from Litecoin if you don't like it, trying to spread your bad feelings toward anything is unnecessary.
Didn't you start this topic to hear why people didn't like Litecoin? Now you're effectively telling him to shut up.
The most significant difference is the encryption (as in cryptocurrency) algorithm. It's not a variable, it's part of the foundation on which a cryptocurrency is built.
Technically, that's a variable. There are several encryption schemes that could be used to make a cryptocurrency. Bitcoin chose one, Litecoin another.
Also, you chose to nitpick instead of acknowledging sd's point. I hope you are not representative of the Litecoin community, because you are not doing a good job at that.