I think everything is just generally "nicer". Stadium seats are cushier, parking lots are paved instead of gravel, sidewalks are a lot wider, more air-conditioned spaces, better food availability, etc.

And people expect more exciting and high quality things now, because they have seen a lot (comparably). Someone growing up in the 1930s wasn't able to hop on the interstate and go 300 miles away for the weekend. Those growing up in the 80s were more apt to do that sort of thing, and as mobility has increased, attractions (nicer ones) have been built out over the decades. Now that person who traveled to all sorts of attractions continues to seek out new things -> bigger and better of course. More $$$.

The basic, economical attractions are still there if you look. Just think smaller scale. Instead of national parks, go to state parks. Instead of Disney, go to the state fair. Instead of Broadway, find the local theater troupe. Instead of MLB/NFL, check out summer or arena leagues. Just because you read about an attraction that seems cool, is 1,500 miles away, and is the best of breed nationwide, doesn't mean you need to or even get to experience it.