There's a lot of "I wouldn't buy at the prices today" here, but they're actually not massively higher than they were 20 years ago accounting for inflation and the general rise in cost of luxury travel. Hotels all over go for double or more than they were just 10 years ago. I bet if you asked this question 20 years from now, a lot of people would say "I bought in 2015-2016 but would never pay the prices as they are today", mirroring this thread pretty closely.
It's true about the quality of the product declining, though, but there's also more attractions and such than there were before, so it's not an entirely apples-to-apples comparison. And you never know what the next regime(s) will do, either. I spend 90% of my time complaining, but I do like some of the after-hours events and the AP discount, so I appreciate those perks at least. And they did bring back the mug handles and quit serving gas station hot dogs at Casey's Corner, so I'll give them the minimum possible credit for that.
If you like to go regularly, it's probably worth it if you can afford it. If not, it's not.