Did you only come to this conclusion when you read that article? Never thought about that at all before that?
If you're 25 (I do suspect you're 25 and not 15 when you say you're half way to thirty) you still got lots of time, I tell you this because I'm 23 and I worry about the same thing you do.
We can lie to eachother telling ourselves everything will be alright!
Anyway maybe this will cheer you up:
I have a 39 year old friend, that's not unnattractive and very social in dealing with people, that still lives with his parents and works for his dad. Marriage and children will probably never happen for him and he seems okay with this.