I tried Dark Souls once, I think it was DS3. I can't figure out what would make it fun for anyone.

You and I (45) are part of the first gamer generation, the first generation that had the opportunity to grow up around video games. As such, you'd expect gaming be a normal hobby for people of our age, and to some extent, it is. However, many people have grown out of games and consider them childish. I think that this is because the games of our childhood were very simple and shallow entertainment. Over the years, games have come to address more and more serious topics with a depth not unlike that of "higher" cultural media such as film or literature, but the people who grew up and left gaming behind before this development don't know that. Their only experience of games may be the simple, "childish" games of the 70s and 80s, so they consider gamers childish as well.