I’m sixteen and have identified as aroace for two years (and would have known earlier, I think, if I knew it was a thing I could be). You’re not too young, and it sounds like you’re probably also some degree of romance-averse if the idea of dating sounds horrible to you, which, while not exclusive to aros, is a pretty common aro experience. If you being aro makes sense to you, you’re probably aro. If most of your peers are old enough to be getting crushes, you’re old enough to be aro.