As an old-timer, the biggest difference between now and the 80s and 90s is that in the 80s and 90s entertainment was relatively scarce. An album cost $20, which was a lot in those days. You could get movies, but you had to go to the video store and remember to return them, and the selection was often limited. If you liked some weird band, most record stores didn't have it. In the 80s TV was very limited and you had to get home in time.

So today entertainment is unlimited and everywhere, personalized and you can have more free entertainment than you could ever watch in a million years. This means other forms of entertainment like hanging out with friends, going to the symphony, the opera, or out to the movies, or just hanging out in public are much less valuable than they used to be.

One example: As a teenager, I used to go to a special screening of a Warren Miller film about extreme skiing that they would do once a year. This was a big annual event where we would watch daredevils ski and do tricks with old Warren narrating and pay $12 to get in. They wouldn't have anything like that on regular TV. Now, there is an unlimited amount of that stuff on almost every single video platform on the internet.

Also, one other huge notable difference was pornography was very hard to get a hold of, and now it's available in unlimited amounts for free. This warps society in all kinds of weird ways. For instance, women were mysterious, incredibly alluring, and much more irresistable in those days. Just seeing cleavage was a big deal! Now all that mystery is totally gone for men who don't abstain from pornography, and young men seem hugely demotivated to date.