When friends have asked me this question I usually say, "Where else could you go, where you unpack once, go to sleep and wake up somewhere different every morning?" I also say you have to experience it to get what is so great about it. I too like the idea that you don't have to worry about your kids while onboard. There are so many activites for them that you can do things as a couple and there are many family-type things to do too! And of course all the pampering doesn't hurt either