I don't think people should necessarily be telling you you're too young to "give up" and look at dating sites - however, I do agree that you shouldn't. Not for that reason, but rather because it's quite a moronic system in my opinion.. I'm not really quite one to actively search for someone. I live in a rather laid-back manner where I simply work with what life presents me. Ambition is good, but it's not necessary in finding a relationship. Things really do just happen. I did indeed meet my husband on the internet, though not a dating site. I think that neither of us were actively looking for something at the time and that we were able to start with an unpressured friendship was what made it work and turn into something more.
Anyway, regardless of my babbling.. I wouldn't give up hope with everyday life interactions just yet. Not at all because you're young, but just because things truly do happen when you least expect it - and those are usually the most extraordinary things. I understand the urge to actively search as everyone needs some sort of connection with another person, and I don't doubt your maturity. I wouldn't look into it just yet unless you're really sure about it under your own decision.
Needless to say, I've never seen a dating site that doesn't have something awry. Of course there's no perfect scenario, but many of them are either scams or not regulated very well. I keep seeing Zoosk on commercials.. maybe that one isn't awful? Haven't looked yet to say for sure

And to the guy who said he needs a girl to convert him into a better man by being a Christian.. holy crap. No pun intended. I can honestly not believe people can make such religious statements on this board after the many (brief) issues over the last couple years.. Besides, you aren't in any authority to make such a statement. Goodness.
At any rate, good luck OP. Maybe chance will work in your favour. If not, go for it; just be careful!