Undeveloped land is a benefit to everyone. Not only is it beautiful to look at and the foundation of the tourist industry, it also feeds us, provides us with firewood, paper, lumber, wool, and syrup, cleans the waters, charges the aquifers, prevents floods, moderates the climate, shelters wild species, pollinates crops, recycles nutrients, builds soils. Land without houses does not put kids in school. It doesn't create garbage or demand that roads be plowed. Taxing land to pay for expenses incurred by houses makes no sense.
Educated children are a benefit to everyone.
You don't want your kids to grow up in a land of ignorance. You don't want to meet uneducated, desperate kids in a dark urban alley. You don' t want to hire them or work with them. You don't want them voting for your leaders. If we aren't jointly responsible for kids while they're growing up, we'll end up having to be responsible for them for the rest of their lives.