Good question! I never thought I would like cruising, but I always liked Disney, and after hearing lots of recommendations, I gave it a try. So, Disney is really all I know for cruising. I definitely agree on the prices and itineraries, and will very likely give another line a try if I cruise again.
But for the question, what would I like so much about it if I am skipping the shows ... I like the service, the theming, character meets, I'm usually quite happy with the food. I like doing the trivia, and some of the crafts with my kids. I love watching the disney movies playing on funnel vision, I like the rainforest room. I like exploring the ship, and being in a disney bubble. And get this ... I don't even go to things like the Sail away party or the Pirate party. So not only do I not go see the shows, but I don't do the deck parties either! I know some may not be able to understand taking a cruise without having those few hours of specific activities, but I still find it really great. In fact, one of my favorite things to do is enjoy the quiet pool deck during the early dinner / early show. It's practically empty then!