Interesting topic! I actually don’t know any men with small children who disappear into hobbies all the time. Where I do see this more is with men whose kids are older, or who are edging towards retirement and suddenly have more time.
You also have to look at the type of hobby and what they’re getting out of it. Golf is a good example of one that can expand to fill an entire day if you let it.
I don’t want to speak for men, as I’m not one, but have a few random thoughts:
“Men time” is a real that that is pretty normal and probably healthy. Men often socialise side-by-side rather than face-to-face and time with other blokes gives them space to decompress in a way they might not at home. We accept that women might want time with female friends to talk freely and reset outside of being a mum/partner. I don’t see why it’s so different for men.
Solitary hobbies can be a big form of escapism. Things like fishing, gaming, even long solo cycles are often about switching off. Especially if the man is an introvert. If work and family life are busy or stressful, these hobbies give them a way to not think, not problem-solve and just exist for a bit. A bit of a mental break from constant demands.
Gym / self-improvement type hobbies can be more complex. First thing that comes to mind is obviously mid life crisis types that hit the gym as they want to look younger etc. But actually, as men get older, health anxiety and ageing can be really frightening. For a few men I know, losing their health and become physically dependent on others is their worst nightmare and can really drive gym interest. Keeping fit feels like something they can control perhaps? And once you’re into it, fitness hobbies take consistency and momentum, so it can start to dominate their routine.
Football we could have a whole thread about. People who aren’t into it underestimate how immersive it is. If someone’s been into football since childhood, it’s not a casual “dip in and out” thing. There are constant matches, transfers, discussions. Keeping up is part of the enjoyment. I think if you’re not into it, it can look excessive, but for fans it’s more like an ongoing narrative they’re invested in.
Of course, any of the above can tip into avoidance. Sometimes it is about not getting much out of family life but not wanting to leave or cause upheaval. So they meet their emotional or social needs elsewhere instead.