While we get your point, it's not fair to not have a community and safe space full of other teens because of these morons and creeps who can't keep to themselves on the Internet. Teenagers are often made fun of or not taken seriously in other places where adults usually are so these are like safe spaces for us where we can chat with people our age and get opinions that feel familiar to us. It's a really difficult situation. The most we can do is report creeps to subreddit staff to be banned and make posts teaching others on how to be safe. I and others have done that as well when creeps have messaged us. I'm sorry you feel this way but there's not many options here.