Earlier quoted context omitted.
How long do you imagine $300k (the average cost to raise a kid) will last you in a luxury nursing home?
We all know that $300k is nowhere near how much it takes to raise a child.
That said, I'll throw in my two cents here because it's as good a place as any. Though I have internal conflict on the whole issue of having children, I have to say that treating them as a means of investment for old age care has two issues - one, it seems kind of like a dick move to them, and two, it's far from guaranteed; they could have their own ideas.