If you want to take a simplistic approach, maybe you could make that case. It's an easy, if misleading conclusion, if tab A fits slot B, that's the way it's supposed to be for everyone. But that's making humans nothing more than biological automatons. Humans, thankfully, have progressed beyond being a mere animal in the biological universe.
From a biological and evolutionary standpoint, it's completely insignificant if 2% (give or take) of the population doesn't procreate. The global population continues to grow.
Thirdly, is rigid homogeneity desirable? I tend to think people are different for a reason. Everyone contributes something to society. Would you really want to go see a Broadway musical produced and directed by Hank the construction foreman?