Kids get out early... like 2PM. Unless you're a bank teller you can start an hour early. It will make you look like a harder worker +1.
Your kids will grow up quickly and you could change jobs over a year or two if it is particularly inflexible. Whatever your situation, it is a short period of your life that can and will change.
A time system doesn't have to solve everyone's problems, in fact it couldn't if it wanted to. Basically the point is to solve your own problems as you see fit, not push one solution onto everyone else.
Your kids will grow up quickly and you could change jobs over a year or two if it is particularly inflexible. Whatever your situation, it is a short period of your life that can and will change.
A time system doesn't have to solve everyone's problems, in fact it couldn't if it wanted to. Basically the point is to solve your own problems as you see fit, not push one solution onto everyone else.