Snape is a closet sensualist who deep down just wants to be redeemed by the love of a good woman.
What version of the books were you reading? He's a prickly character who gets his wick up over the slightest thing, hair-shirts his way through life and probably hogs the gravy at dinner. You might like him as a character, but you wouldn't invite him over for Christmas lunch.
Writing Peter out of the HP universe entirely.
My name is J.K Rowling. You killed my canon world. Prepare to die.
-- the rest are here :)