No, the reason it has me worried is because although I have people I care about, I don't think I love anybody so much that I'd rather spend time with them than work/learn/create things. When I think about starting a family, I worry about how much I'll regret not being able to devote my full energy to building intellectual edifices out of math, bits, and music. But I see most people here saying the opposite.
I'm trying to tell myself that this is only because I don't have kids. Surely, if I had kids, my whole perspective would change, and I'd become a more complete human being, right?