I don't know, there is nothing like a raspy cat tongue on my hand to make me feel all warm inside. As for dogs, no thanks. Dogs are bad about licking when it is least expected, often on the face or chin. It is as if they know I hate it, so they have to be sneaky.
I don't want some dude sweating on me for any reason unless he is pulling me out of a flaming automobile (my dad used to come home all sweaty from work when I was a kid and it is just a terrible odor), but the first time a group of sweaty girls ran close by in gym class it became abundantly clear that there is nothing at all undesirable about a sweaty female. I can still remember the smell.
No reason for anyone to spit on me at all, I don't even like my own spit. As for being licked by a person, as mentioned before by others, context is key.