Sincere question: why play long video games?

Admittedly, I am not a games enthusiast, whether video or board, but I have played both at times. In particular, I played a lot of -- OK, this is totally gonna reveal that I'm an old ;P -- THPS, and I'm 100℅ sure I played both RPG-type computer games as well as like Mario Bros stuff. However, I just have never really grasped what makes video games so enticing.

I suspect this is an annoying and well-trodden path, but I would sincerely appreciate it if you could find it in your heart to help me understand.

For me personally, I tend to look at things in terms of costs and benefits. Through that lens, most games seem like a bad deal. In principle, I like some of the more quirky or esoteric ones, but it quickly seems like a lot to learn relative the payout.

When I was in HS, I had a band. Has that type of interaction simply been replaced by video games?

I swear I'm not trying to troll -- I really want to understand the interplay between video games and psychology. Cuz it seems like FPSes are dominant whereas not too long ago they were a single niche among many niches.

I appreciate your taking the time to read/reply.