Those models in the photos are pretty cool.
This is one time when I'm kind of glad Japanese houses are small. If I had the space, I'm sure I would find it hard to resist indulging in lego sets or just in loose pieces. I'm sure you've seen some of the images of people who have entire rooms full of just lego part storage. Anyway, they are relaxing to put together, there is that slight dopamine hit when we complete one, and the model itself can be fun to put on a bookshelf and look at sometimes.
So it's good I don't have the space to do this! Haha
I know a few who have rooms full of Lego and I get it, but I'm not that way inclined to guess, so I'll take them apart and build them into other things and then maybe take them apart again. It's going to get extra value out of the money spent on each set right? It's not been a problem before but now I've got quite a few sets it's getting a little out of hand.