You're not the lone stranger in this. I won't be going to shore when my son and I sail off in March. I have no interest in going off to an island. In my opinion, it's called a Cruise, going to an island is a vacation? No, not the word I am searching for.
I guess what I am trying to state, badly at that, is if i wanted to visit the islands, i would fly there. A few hours to go see and touch and spend money, just isn't worth it.
Besides, I have been to most of the tropical islands for work, and I guess I am the odd ball, but after a while, they all look the same.