I have been on 5 cruises in the last 3 years. The first time I went for one week the weather was perfect the islands were beautiful and the ship was great! We had smooth sailing the entire way and that experience made me want to go back again and again. Some people find that cruising is addicting, if you love it chances are you will keep taking cruises.
Whether you have a good experience or a bad one and want to go on more depends on a few factors. If the ship is nice, clean, offers great amenities, entertainment, accommodations, food and service chances are you will have a better time. I have been on beautiful ships from Celebrity Cruise Lines which was a wonderful experience. I have however also been on cruises where the ship was not so great...Norwegian