I never had children, am I missing out?

Of course you're not missing out. For all we know, it was a good thing you never had kids. Not that you wouldn't make a good mother but because maybe you were meant to do something else in life like contributing good things to society as a whole. Not to mention how stressful, tiresome, and life-imprisoning being a parent can be. Not everyone is meant to have kids and you're not less of a human just because you never procreated. Heck, it's not likely I'll ever have kids either unless it's by adoption. Not because I'm infertile (However, even if I was, it wouldn't matter as I have no interest in going through pregnancy and childbirth) but because I believe it's not morally right to bring kids into a burdened, despressingly overpopulated world where suffering is evitable as well as death (I'm a Antinatalist you see). I honestly believe that if one truly loves their hypothetical kids, then NOT having them would be the best thing. There's too many kids out there in need of parents and homes as it is and those children go through enough suffering in their lives. I think it would be far better and humane to open your heart to an existing child. So if you really want a child, you could probably adopt. If you pursue that, good luck. If not, just try your best to find other things in life that'll give you happiness and fulfillment. If you can be content this way, then children will never be a requirement of you or a neccesary way of having purpose.