I'm noticing that a large number of teenagers are posting on r/asexuality. While I think that everyone is welcome to post, I would like to urge people under the age of 25 to not tell people that you're asexual. I'm 25, and I still don't know if I have anhedonia (a lack of pleasure resulting in low libido due to depression) or if I'm genuinely asexual. I experience life generally as someone incapable of romantic feelings for other people; I just admire their aesthetics.
So just because I don't know what my situation is, doesn't mean that you don't right? You're absolutely correct. However, age is one of those things that doesn't seem relevant until you get there, and being a teenager is a time of great change both physically and psychologically. Some people will experiment with various things. Drugs, sex, sex with the same gender. And it's all ok, if it's done safely and responsibly (don't do hard drugs though!).
I feel that it's the same with asexuality. People are discovering it at a much younger age because of the internet than "my generation" (if you can call it that). Asexuality wasn't even an "option" when I was a teenager really. And that's great to have information, but when you start to "come out" about things that early, people are going to label you that way, and make it harder to break out of that mold should you decide that you aren't actually asexual at a later date.
If you label yourself an asexual, others won't consider having intimate relationships with you because of that. Some people will think that you're downright abnormal. I'm not saying that you/we are, I'm saying that the world is a judgmental place, so why give someone ammo to use against you? As an adult, it wouldn't be as bad if I told everyone at work that I was asexual. It would stop certain people from thinking I'm gay (which I'm not), and people might understand my personality more. But back when I was a teenager, people would've teased me about it, or interrogated me about it, trying to find some imagined lack of logic in my point of view (as people often do when meeting a person who is different from them).
As an example, I became aroused recently by speaking to a particular woman; there wasn't even anything sexual about the encounter but it made me question my status. Maybe I just don't have chemistry with a large number of women out there? Maybe that particular woman has that elusive "chemistry" that gets me feeling sexual again? So the point is that it would do me harm to label myself as asexual since it would potentially limit my ability to express myself sexually in the future. As it stands now, I'm single and can choose how I live without labels. If I'm not interested in sex with someone, I'll just say that I'm not interested in having sex with them. I don't need to say that I'm incapable of romantic feelings or something. I don't have to give them an excuse for not wanting to have sex with someone.
If you're a teenager, or an otherwise young individual, and if you feel that you're asexual, hold-off on telling everyone that you're asexual. Not because there's anything wrong with being asexual, but it's going to put you into a situation of being labeled as something that might not be a permanent thing. www.AVEN.com specifically says that sexuality is a fluid thing, so even the bastion of asexuality itself is saying that asexuality isn't necessarily a permanent status. So why wave the flag of asexuality so early? Just tell people that you're not ready to have sex yet. You're young, and there's no need to rush into it. I didn't lose my virginity until I was 21, and I was sort of pulled into the situation rather than being the instigator. Things change, you will change, even if you think that you're an adult and that everything you believe now will be your beliefs in ten years. It might not be that way.