Hey! Welcome back to the site! Just out of curiosity, you didn't happen to used to do RPG'ing?
And don't worry, your not too old. I'm 21 and there are a couple of more on here who have kids or are in their 20's
Being single doesn't make you weak, it means that you are strong enough to be on your own; Being alone could be a good thing, because there is no drama involved in your life, no pain, and free to do what ever you want. Life is too short to be chasing those who aren't even worth fighting for, you are worth more than that.