Why hot tubs are gross

I'm sure you've seen it too. The dude who sits in the hot tub for the entire afternoon, drinking beer, and never gets out for a pee. What do you imagine is going on there? And what do you imagine you'll be sitting in if you get in there... Not only that, but people make out in hot tubs. Think that through. The only way to make a hot tub safe, short of a complete drain and refill, is dumping in a load of chemicals to kill all the potential toxins. So when you climb into that hot tub, you'll either be sitting in a chemical soup, or a stew of human bacteria. Sorry to wreck your fun.