As much as I hate to say it, EII has a point. Used to be if you were a grandparent before age 50 you and your child both did well; you were (generally) married, you were somewhat stable, you had the American dream! Now having a kid before you're 28 is looked down on because you haven't done this that or the other. Doesn't help that the folks having kids at young ages now are generally featured on Jerry Springer, Maury, and the like, perpetuating the myth that having kids early is necessarily a bad thing.
I have several friends that got married and had kids in their early 20s. They're all successful, happy, and fulfilled. They're what America was supposed to look like.