It depends on how much you like the "theme" in "theme park." If you love details and well-crafted stories translated into real-life spaces, then you will appreciate the queues a lot more.
The Wizarding World of Harry Potter first opened at Universal Orlando was the first time I genuinely felt that the queue was as important as the actual ride. And if you're a fan of theme parks and/or Harry Potter, I'd absolutely agree. It's an integral part of the story... not just something to do to pass the time before you sit down in a chair for a few minutes. When they opened the priority lane (in Hollywood), you could rush by and see the highlights, but it was in no way the same as taking in the details and savoring them. People didn't appreciate the story and effects nearly as much.
I feel the same way about the Flight of Passage queue. If you don't walk through it at least once and soak it all in, you're missing a huge part of the loving detail that goes into creating the universe of the attraction. I thought FoP's queue was astonishingly well done and a fine example of "magic." Would I want to wait in it every single time? Probably not. If I have a FP, I'm going to use the FP. If I'm there at rope drop, I'm going to rush through as fast as it will let me. But if the wait time is tolerable, I'd recommend that any fans of "theming" to walk through the FoP queue at least once... at a leisurely pace and taking in the details/atmosphere. There's plenty to keep you occupied, especially if you're visiting with people you like to hang out with, so you can just enjoy being there in the moment.
Same answer for Peter Pan. In my opinion, the queue to Peter Pan is noticeably newer and more advanced of an attraction than the ride portion itself!
Disney and others have spoiled people with FastPass systems, and reduced our attention spans overall. But once in a while, queuing can actually be a positive part of a relaxing vacation!
