J.B.
I haven't seen the movie but can relate a bit. I was friends with a couple who, 10 years ago, had no intention of having children, ever. One was a math teacher and the other was a physicist. I remember saying that it was a shame that they weren't going to have children because they are exactly the kind of people who *should* be procreating and sharing their brainiac genes with the world. They did eventually decide to have kids and are great parents. I definitely know plenty of people where if their genetic line stopped with them, the world would not suffer a loss. Alas, those are the ones who keep having kids...