Nothing wrong with a little spit in my opinion. Although I don't like tobacco flavors so maybe that is coloring my answer.
Although don't people drink "gourmet" coffee that has emerged out of the digestive system of a monkey or something?
Also, my grandmother gave me fried and breaded brain as I child. I really thought it was okay but the texture was weird, so I investigated. It then became tragic, so I made sure to let my little sis know what we were eating, with the caveat "Don't say anything, it's rude."
Man I've gotten a lot of nicer since my youth (usually) but I little spit is kind of low on my list of "really gross things" and I have seen my share. I tend to buy abodes that used to be scary and rehab them. Like the crack house: walls BLACK with roach eggs. I scraped most of them off but I STILL had the exterminators come for a year. LOL.
Mostly spit is quite harmless. Have never kissed a girl who chewed tobacco but I would not be OPPOSED, really. Try anything at least ONCE is my motto within reason.
Anna