So why don't we have kids start school at 9, adults start work at 10, kids get out of school at 5 instead of 3, adults get out of work at 6 instead of 5, proble

So why don't we have kids start school at 9, adults start work at 10, kids get out of school at 5 instead of 3, adults get out of work at 6 instead of 5, problem solved???