It supposedly tastes much better. I’m sure there’s also a few conspiracy nuts who think pasteurization makes you weaker for the jewish takeover or something.
It’s also a personal liberty issue. People don’t like being told they can’t do something, and while I agree with bans on consumption of raw milk, we should critically analyze any law where the government tells private citizens what to do or not do. Especially when there isn’t clear harm being done to another person.