Having kids becomes a lot easier if you can do the things you enjoy with them. For me that includes all sorts of stuff such as D&D, warhammer, painting miniatures, drawing, magic the gathering, board games, etc. I also include them when I have to fix something around the house or some random electronic device that broke.
If the only thing you can enjoy is adult stuff or working then you might have a rougher time at it if you don't find joy in the pure act of raising a kid. For me the first few months were meh, but once they started to get a personality I found it more entertaining.
Many of those are things I greatly enjoy, as well as many other things from a very diverse range of hobbies. My kids aren’t old enough to join in on those things yet (6 and 4), so I only find time to do those things once every few months, as opposed to once or twice a week pre-kids. It’s improving as they get older though, hence my hopefulness.