Just sharing random coffee break thoughts... it always blows my mind is how many people _don't_ think like this. When base conditions improve for society, the conditions improve for _everyone_ regardless if they directly benefit you.
I'm also in the boat where I don't have kids, but I'd also like to live in a place that has educated people - so schools make perfect sense to me. Heck, even if I didn't benefit from it, providing children education is just the gosh-darn right thing to do.