Dude, I'm three years older than you and by default am just as inexperienced with women.
It's not so much that time is running out, which it isn't, it's just that there's this weird social viewpoint that males over a certain age (which seems to get lower and lower as time goes on) that haven't had a girlfriend are somehow pathetic. This viewpoint starts from other guys who are more experienced, so to speak, and if you get even older (I don't know, 23-25?) it extends to any girls you might want to date. Not to mention that the longer you're single and not particularly satisfied with it (and it tends to weigh you down emotionally), the less likely it is that your personality will attract women.
I'll put it this way, though. I'll be extremely disappointed if I go from single to having to raise kids (at age 30+, I am not going to try and raise children before then) without having some fun first, so to speak. Though it seems this is the path my life is taking to this point.