I used to be obsessed with many different things during childhood, perhaps because I am an only child and had large chunks of time where I was in my own room, alone, as a child. I would do things like lay out a paper map of a city, and start tracing my fingers along the roads as if I was a bus driver, or pretending I had multiple estates. I would start documenting the statistics of my Pokemon card deck. Take apart my computer. Spend hours trying to create something significant from random Lego blocks. Make songs by humming into a cassette tape recorder. Even invented a language (very short-lived hobby).

Then puberty hit. I became more interested in making sure my hair and clothes were cool enough, so I could fit in, so I could attract my crush. I became much more addicted into the mainstream grooves of video games, such as League of Legends. I lost interest in random obsessions, and instead replaced it with a more artificial one governed by Riot Games or Blizzard, and the digital points/levels that I got in game.

Then I grew up. I am now working as a software developer, but don't even have much obsession for programming at all. I just don't see how someone can get excited about the intracacies of a programming language, because its so dry and boring. And I feel a bit ashamed for not being too interested in hacking together a MVP anymore, even though programming presents such a huge realm of possibility available to anyone at no barrier/cost to entry. Nowadays, whenever I have a slight interest in anything, the capitalistic worldview has polluted my thoughts by always triggering the thought: "but is this a viable business idea? Could I get recognition from others and provide value such that the market would compensate me?"

I would trade anything to get my childhood obsessions back, because I am living mostly like the repetitive 9-5er you describe.