So I’m a minor (16 to be specific) and I frequently watch and read stuff with explicit sexual or 18+ content in it. I live in an extremely conservative Christian household and things like explicit fanfic are pretty much the only option I have for learning about sex that isn’t abstinence only. I do feel bad about it, especially when I see adults online say stuff like “oh i watched lots of inappropriate things as a teen that i really shouldn’t have” and it makes me feel like I’m ruining myself in a way that I won’t realize until I’m an adult? Right now I don’t see what the big deal is but i get the feeling that when i’m 24 or something I’ll wake up one day and be ashamed of this for some reason i’m not mature enough to know yet. Should I just stop and wait until I’m 18 to continue or what?
okay. I'm gonna hit you with something:
turning 18 does not actually change the way you feel about porn or sex or anything. the difference between being seventeen and 364 days and being 18 is nonexistent. there's not a magical switch that changes you as a person; that comes from lived experience. if you're 18 and your experience is still that porn and smut and what have you i something that you should feel bad about, it's still going to feel that way and a birthday won't change that.
look, the whole notion of "I saw [x] that I shouldn't have when I was young" is like. okay. so you saw something that was a little mature for you that you didn't quite get? awesome. did you die? no. most people's hangups about sexuality don't come from seeing a rogue titty when they were a teenager, they come from the culture that person was raised in that made seeing a rogue titty feel like something to be ashamed of instead of a completely natural part of life.
story time! when I teach my 4th-6th grade OWL classes (Our Whole Lives, great human development program) I always start by holding a meeting with the kids' parents. I've been doing this for seven years, and every time without fail some of the parents will recall seeing porn for the first time as a kid. these guys were kids when printed porn magazines were still a thing, so they were discovering them in all kinds of places - the bedrooms of their parents or their friends' parents, at bus stops, in the woods, once even stowed in some farm equipment. and they remember it feeling illicit and exciting, sure, and possibly making them confused or even horny for the first time in their young lives, but like... that's it. none of these people are irreparably damaged by seeing porn. in fact, they've grown up to be the kind of people who go out of their way to make sure their young kids are enrolled in a queer-friendly, body-positive, diversity-embracing sex ed class to counter stereotypes and misinformation they might receive elsewhere.
looking at things that arouse you is morally neutral. it can be a great way to help you learn about what turns you on, and even if it's not the best source of factual, realistic depictions of sex, it can still help you discover things - hell, I only figured out what the clitoris was by reading Young Justice fanfic (shout out Snaibsel).
you can't ruin yourself, at any age, with the media you like to consume. what makes you uncomfortable and anxious is the attitude you've been taught to have about that media, which is something that has to be actively unlearned, because it's certainly not going to just disappear on its own when you become a legal adult.
tl;dr obviously no one is making you watch porn and you shouldn't if it makes you uncomfortable, but if you drop it right now and come back when you're 18 don't expect to feel any different if you haven't done any more unpacking re: the conservative Christianity of it all.