People also spend their time on a lot of "commitments" that aren't really important. The things you listed are stuff that can be skipped every once in a while if you don't want to go. Children shouldn't have any obligations, that's just something weird, but I know what you're talking about.

What most people do is have a lot of "commitments" hanging in the air in their future calendars, so that they can pick what pleases them in the moment. If they're expected at another event, they can blame the full schedule. Not meeting an "old friend" because you have to go do your hobby or celebrate your cousin's kid's birthday usually just means you didn't want to meet that person. When there's a will there's a way. You can always slot in some time if you really want. People spend huge amounts of time watching Netflix, scrolling social media and such. Everybody has time, unless they're a sailor on a nuclear submarine.