Ignore what other people tell you. You kiss when you're ready and when you feel it's right. It's YOUR body, which means YOU control what happens to it and what you do with it, even if that means to wait even longer for that perfect kiss. Who's to tell you that you can't?
It's perfectly okay that you haven't kissed anyone yet. My best friend is going on 19 soon, and still hasn't kissed anyone herself. In fact, most my friends haven't yet, lol..
(they're not loners, though, haha... They just haven't found the right guy to date yet, or just had horrible dating experiences and it just hasn't happened).