It activates the same chemicals in your brain as cocaine! 
Well, yeah, there are only ~~three~~^[@Neuromancer49@midwest.social corrected me] a few neurotransmitters. That's not saying much.
You know what else activates those chemicals? Practically everything. When scientists breed "knockout" mice without dopamine, the mice just stand there until they die of thirst, because there is no reward for.... living.
It contains more germs than a toilet seat! 
Germs like moist surfaces. We don't want germs on our toilets, which is why we make them out of porcelain, which is hard, dry, non-porous, and easy to clean.
If it had more germs than your colon, then I would be concerned.
I studied biology and biopsychology and now my job is vitamin supplement salesman. I like having a bullshit office job but that extra layer of pretending to go along with bullshit is maddening. Someone asked me if we had anything for whooping cough and like holy shit dude you need a doctor and antibiotics not a dumbass college dropout that barely knows excel.