They are little pools off sweat, piss, and disease.
Why on earth do people think they are a fun time?
Is this something peculiar to white trash and people from New Jersey?
My neighborhood has a community one, I bring dates there lol
i think people think they're a prelude to sex. and, there's little chance of winding up with a chick that stanks after she gets out of one.
personally, i'm with OP. i avoid them and if i do get in one, it's not more than 5 minutes then straight to the showers.
My neighbor put one on his back patio. It goes well with his above ground pool.
The following will only make sense to Philadelphians: I live in the burbs, he's originally from Kensington, Eagles season ticket holder, and has a place in Wildwood. 
II was in one with a old GF when ome creepy asian dude got in. He facing the wall of of the hot tub and had his crotch on the jet. He tried ot hide his orgasm, but we knew and we immediately got out and reported him to security.
Never again
When I was in high school I used a picture button to pierce my ear when I was at the state wrestling tournament. A lady at the hotel said to get in the hot tub to keep it from getting infected so I jumped in...it did not work and got infected bad and I blame the hot tub. Cool story I know 
Jack Carter -
II was in one with a old GF when ome creepy asian dude got in. He facing the wall of of the hot tub and had his crotch on the jet. He tried ot hide his orgasm, but we knew and we immediately got out and reported him to security.
Never again
It was you who reported me?! fuck you dude I got banned.
Forrest Gimp - You know, that time between the bubbles come and go in the chlorine-water, it's a cleaning process.
I hope you mean bromine.
Jay4455 - I broke my own personal rule and got into one at a hotel last memorial weekend. I got some kind of itchy fungus. My shoulders, calves, fore arms and chest got little red bumps. No idea what it was until it clicked and when to the doctor.
Never again!
Pseudomonas. Classic med school board question.
https://en.wikipedia.org/wiki/Hot_tub_folliculitis
Gforce -Jay4455 - I broke my own personal rule and got into one at a hotel last memorial weekend. I got some kind of itchy fungus. My shoulders, calves, fore arms and chest got little red bumps. No idea what it was until it clicked and when to the doctor.
Never again!
Pseudomonas. Classic med school board question.
https://en.wikipedia.org/wiki/Hot_tub_folliculitis
Chemicals were out of whack. We have one that only me and the wife use... We dont even let the kids in it.
When we first got ours and didnt have the chemicals quite right, we had the same issue. Sucks but goes away pretty quick.
Man one time me and my lady got a cabin in the smokey mountains. It had a hot tub, hadn't been in one in years. Got in the first night and didn't think much of it.
The second day were took some lsd and eventually decide to get back in there. Suddenly I have the realization that it's nasty as hell. It's like bathwater that never gets changed. It's like and underwater bidet. Just offensive as all hell.
"How do they keep this from being a breeding ground for disease?" I wondered...
"Oh, by pumping it full of all kinds of chemicals" I realized as I notice the chemical filter thingy floating around in there.
Wife was all kinds of pissed off Hahaha. "how the hell do you ruin a hot tub?!? Well, there ya go."
Jack Carter -Dude, I was massaging my quads. Went heavy on squats. Do you even lift?
II was in one with a old GF when ome creepy asian dude got in. He facing the wall of of the hot tub and had his crotch on the jet. He tried ot hide his orgasm, but we knew and we immediately got out and reported him to security.
Never again
I got in a hotel hot tub a few years back... and stepped in a human turd that was trying to get sucked through the filter. Some jerk shat in the hot tub then GTFO of there without telling the front desk. I took a 2 hr shower after. Made a thread on here about it when it happened haha. Traumatic experience.
In college there was a hot tub by the hour place called Tubs. Let that sink in.
I have one and fucking love it. I keeps that fucker clean, chemicaled, and regulated.
Jay4455 - I broke my own personal rule and got into one at a hotel last memorial weekend. I got some kind of itchy fungus. My shoulders, calves, fore arms and chest got little red bumps. No idea what it was until it clicked and when to the doctor.Dude you need to shower with soap. You have a a sensitivity to one of the chemicals. Same thing happens to my son at the pool.
Never again!
crazyea -It could be that or a bacteria.Jay4455 - I broke my own personal rule and got into one at a hotel last memorial weekend. I got some kind of itchy fungus. My shoulders, calves, fore arms and chest got little red bumps. No idea what it was until it clicked and when to the doctor.Dude you need to shower with soap. You have a a sensitivity to one of the chemicals. Same thing happens to my son at the pool.
Never again!
My parents had one that they cleaned and shocked regularly even without using it often. I went in it with my girl at the time as my parents were away and the next day she had itchy red soars from something in the water. I was fine but I'm darker than her, and she had very fair sensitive skin.
Some people have more sensitive skin reactions than others.
From what I read, even without the tubs being overly dirty they can have some nasty bacteria in them.
If I had my own I'd be in that shit all the time. Community hot tub? Fuck that.