I would totally love to go on a cruise ship one day. 
Me too! I would love to go on a "Cruse to Nowhere" where the ship makes a 2-3 night trip without stopping at any ports on the way.
That does sound interesting. 
Transportation is not the only reason for crusing though, most cruses are "Closed Loop" returning the passengers back to where they left. 
What destination would be your ideal vacation for a cruise? 
I would love to visit Puerto Vallarta! It is a Mexican beach resort city on the Pacific Ocean's Bahia de Banderas! It's so beautiful! 
I've heard about it.  The sand and water is supposed to be pristine. It's definitely one of my desired destinations. 
Either there or El Nido, Palawan! It's currently ranked #4 in Conde Nast Traveler's "20 Most Beautiful Beaches"! I want to see all 20!