I don't know, I think there's some merit to the notion that an educated populace has benefits for everyone. Basically by investing in the development of kids(even if you don't have any yourself) you're setting the populace up so that the up and coming generation will be capable enough to keep everything running smoothly which will benefit you. Little Timmy down the street grows up to be the engineer who knows how to keep the electric grid properly balanced and operational so you don't end up living in the dark ages. That's the theory on paper anyway, even if that's not what the educational system is in actuality.