My friend said he doesn't want children.

I asked why?
He said: Because raising children is too expensive, and I don't like kids.
I asked: Aren't you afraid that when you're old, no one will take care of you?
He said: I’ve calculated it; raising a child until they graduate from college will cost at least 1 million yuan.
I will save that 1 million yuan and, when I’m old, live in the best nursing home, with the best caregivers.
If the caregivers are disobedient, I can replace them; if the children are disobedient, I can't replace them.