I'd find it odd if I enjoyed the same things as much now as I did when I was say, 6-12 years old. Games and shows for kids are meant for a child-like mind. You can still appreciate them for what they are - I've watched Lazy Town with my nieces and enjoyed the quality of the music and Stefán Karl Stefánsson as Robbie Rotten. But I'm not sitting down to watch it on my own.
Plus game design and definitely graphics can improve over time. E.g. I loved Golden Eye on N64 as a kid, but if I replayed it I think nostalgia would be doing a lot of heavy lifting. I replayed FF7 Classic a year or two ago and did not find it nearly as compelling as I did when I was 16. It was still alright, but it didn't amaze me the way it did in PS1 days.
I loved Golden Eye on N64 as a kid, but if I replayed it I think nostalgia would be doing a lot of heavy lifting
This one probably only needs a more intuitive control scheme, I have zero nostalgia for it since I only played FPS games on PC, but I loved the Agent 64 demo that is on steam, do give it a try!
I played Doom before Goldeneye but I was still able to get into it at the time. Going back to it again in recent years I found the controls were like muscle memory. They're still not great but it worked well enough back in the day.