I am still a child if I want to be, right?

I am fifteen, and I am so sick and tired of adults expecting teenagers to act like grownups. They assume that we all want to date and drive and do drugs. I am not that way at all, and so it really bugs me how people make assumptions about me before they get to know me. I think that kissing is disgusting, and I couldn't care less about having a boyfriend, unlike so many other girls my age. I am just not interested in so many of the things other teenagers are. I still consider myself a child, why can't adults? I have not left childhood behind yet.