I wouldn't say gaming is " over", but computer/video games reached their creative zenith over two decades ago and it's been a slow and agonizing downward spiral ever since.
Those who lived to see the evolution of the medium had a pretty unique opportunity. Thankfully the preservation efforts are top-notch, benefitting both those who feel nostalgic about those times (I do) and those who are curious about them and wish to try some of the games first hand, although playing them so many years after the fact really doesn't capture the totality of the experience.
Games are now a fully commodified, assimilated industry, not unlike movies or music. The vast, vast majority of output is awful. Some cool games are still being produced, but most of the time they pale in comparison to the classics. There is almost no space for experimentation, so even talented, "independent" developers are forced to stick to established formulas since they have to compete with an infinite number of talentless hacks in storefronts that have done an awful job at curating content.
Old games were cool because you could see that norms had not yet been established, and you could see unique perspectives everywhere - control schemes, the way the player interacted with the world, weird interfaces, etc. Now everything is standardized and sanitized, and that familiarity runs counter to the feeling of wonder and escape that games used to provide.
As for my own personal experience of getting older (I'm 41), whenever I spend time playing games lately I keep thinking that I should be doing other things, like reading, exercising, working or sleeping.
I'm ok with the fact that new games are not made for me. I don't like them and I don't want to like them. There is an almost infinite back catalog of good games to go back to, and I couldn't possibly find the time to play them all.