With the usual caveat that this is just my personal experience and situation, and opinion, and not meant to imply anyone else's experience should be the same as mine:
I would be one of those mentioned in a previous post, who has no interest in theme parks, but am a Disney fan. I've been to a Universal Park once, 15+ years ago, and no other theme park in more than 30 years, while I go to Disney World 4-5 trips a year. Universal is the same distance from my house as Disney, but I have no interest in their parks at all. I have been a Disney fan since I was a tot - I was taken to Disney World opening month in 1971, and have been to Disney theme parks every year of my life. I grew up on Walt Disney's television specials, nature shows, and movies...so it's a nostalgic connection that's engrained deep inside me.
My Disney trips now aren't about riding rides, as an adult with no kids, the trips are more about just enjoying the atmosphere, people-watching, hitting a few rides that I have fond remembrances of, and maybe a few new rides I like. I love touring around the various resorts, hitting some good table service restaurants, enjoying the bars and drinks, hanging out with friends and family alike.
I can still do all that, and I still go regularly - I still always have a good time and enjoy the parks and the resorts. But I can also say that the past 5 years or so have felt a little bit less special mostly because of all those little things adding up - the costs seem to be rising higher and faster than any previous period I can remember, so many little perks are becoming pay-to-play, or being removed. Free valet parking for DVC, airport transportation, fast passes, and so on. Seems like more ride closures, more spaces going empty for longer or not being replaced, intricate theming being scaled back and more IP taking over what used to be more educational or cultural/ethnic, traditional Disney sightline guidance being broken, some employees not seemingly up to traditional Disney standards and rules of behavior, mood, appearance, and customer excellence. Again - not enough to make me feel like it's not worth going anymore, just making me wish they could restore some of those things again, maybe either reduce costs a bit, or restore more perks as part of those higher costs.
As a DVC member and annual passholder for decades, my costs are still much more controlled than others - without taking dues into consideration, the AP cost has gone up pretty considerably, but still well worth it for me considering I spend at least 16 days or more a year in the parks...I do consider that I don't get the benefit of free fast passes anymore - if I wanted Lightning multipass, it's $25+ per day. I get charged $39 per day to valet park that used to be free, without even considering higher food and drink costs, I'm already $260 higher for a 4 day trip just with those two things. I used to justify going to Disney so often to friends and family by joking that the trip really isn't much more than just a tank of gas to get there and back, and whatever I spend on food and drink (skipping DVC dues and annual pass costs)...now, that's not true anymore. I used to come home with a $300-400 credit card bill for each trip - now it's usually $600-700, doing the exact same things. And I don't even buy the Genie/Lightning multi-pass - I just don't find it worth it. I'll hit a standby line if reasonable, and if it's too long, I skip the ride.
I still do other trips each year - I don't really think to compare Disney OR cruise/European trip - If I ever pared back on Disney trips, I wouldn't be going to another theme park OR adding more international trips in its place - I'd just take one less Disney trip a year and stay home. I do wish I could send Disney a message that the drip-by-drip perk removal and ever-rising costs need to stop, but unfortunately the trips are still well worth it for me, even if they're not AS worth it as they were 5-10 years ago...so I sadly play right into Disney's game to justify what they're doing.