This is very interesting to me. We went to Disney 7 years ago and bought 10 day park hoppers with 6 plus passes. At the end of our trip we'd only used 4 park days and 1 plus pass, so I paid about $700 to convert them to non-expiring. I was certain we'd be back within a few years.
7 years later, we're finally returning to Orlando - well, 2 of the 4 of us. And my daughter has NO interest in anything Disney except for hitting Downtown Disney to shop and do a little pin trading (I know it's very limited there). I was disappointed because, well, FREE TICKETS!
Then I priced Sea World/Aquatica with a vacation package they have going on now. It's actually about the same price for us to spend 5 days at a Sea World hotel (with free breakfast) and as much time as we want at the parks (with 2 full days of free dining) than to simply pay for a value Disney resort and use the tickets we already paid for. Now I know Sea World/Aquatica aren't on the level of Disney - but after looking online at the attractions, my daughter said she would much rather do that than Disney. So what a win/win situation for me!
I assume we'll use those 6 days at Disney and 5 water park/Disney Quest days at some point, lol. Maybe when we take our grandkids in 15 or so years! Til then, neither my kids nor my husband have any interest whatsoever in returning.