Ruin Explorer
Legend
That's the thing. Many groups are sane, even when you're like 12 or 14 or w/e.I believe you. I am not denying your experience.
But even when we were 14 year old boys we did not engage in that BS. WTaF?
Like, the worst thing that happened in our groups when we were teenagers was basically just occasionally two PCs/players getting so mad they duelled or something (which resolved the issue because usually both of them got so wrekt by that that even the 'winner' was like "Ok that's not a good idea"). No-one even proposed anything grim (no torture, let alone worse, sure some death threats and the odd execution of some heinous individual, but that's kind of different). The closest was when we found some baby orcs (like, toddlers), and the DM - the DM! - insisted we had to kill them, and we, the players, told him where he could shove that. He even brought in his OP GMPC Paladin from out of nowhere to try and bully us/emotionally blackmail us! But even at 13 our morality was too advanced for baby-slaughter! We ended up taking them to a monastery of Illmater to be raised as foundlings (quite a way out of our way, but it seemed like the right thing to do). The DM did eventually grudgingly admit that was probably okay, but this marked his last session where he was allowed to be DM lol.
Some are not.
Like one guy I met at uni was gleefully recounting what his AD&D group's PCs got up to (really gross stuff), and clearly thought it was cool, and we were like, what in god's holy name is wrong with your brain that you not only did that, but thought it was cool to boast about to basically strangers? Honestly made me start thinking maybe some people should just be "on a list"... Prior to that the people I was with had been thinking we could have him be part of the housemate situation we were planning, but after that, he was absolutely out.
And quite a few are mostly-sane people with 1-2 strange individuals.
And other times people just have unexpected lines. Like the one person I met who would not fight horse-like monsters. Ever. I'm sure they had their reasons.
(The arachnophobia thing is fine though I do think anyone who is phobic re: a certain kind of creature probably wants to consider talking to the DM beforehand, because the odds of bumping into such a giant extra-scary version of something in D&D are high, and a lot of people's phobias are different shapes - for one person turning it into a giant crab or a giant praying mantis would be absolutely fine, fix the problem, for another it would continue the problem.)