That’s really my issue with cruises as well, beyond the generally pre-packaged nature of the thing.
We actually took a cruise a couple of years ago in Hawaii, on the NCL “Pride of America” ship between the four major Hawaiian islands.
It was… ok. The food was ok- probably pretty impressive considering the volumes they have to crank out, but not anywhere near as great as what we could have got onshore, had we just spent the week of the cruise flying between the islands on Southwest and eating locally. As far as the ship stuff went, the whole thing was basically devised to sail overnight and wake up in a new port each morning, with a couple of places having a night in port. Our usual approach (we had our kids) was to go on the shore stuff all day, come back, rest a bit/hang out by the pool, have dinner, and then turn in kind of early. One night we saw a magic show that was decently fun, and we’d generally eat a late-ish dinner and let the kids play in the pool.
The shore excursions were kind of hit or miss. We had a couple (Maui and Big Island, and the submarine) that were fantastic, because the tour guides were very personable and willing to talk about their personal experiences, or because they were so unique (the submarine). Others were tourist trap crap (the Kauai afternoon one, the Maui morning one, and the ) and most were ok, but not anything special. All in all, kind of a wash vs. the stuff we could have got up to on our own.
I didn’t really mind the ship part, but my wife found out that she gets mal de débarquement syndrome, so she was NOT about the ship stuff at all. One son got queasy, while me and the other kid were kind of enjoying the whole thing when the waves got up one evening.
Still, when I think back on the two weeks we spent in Hawaii, most of my memories aren’t shipboard stuff or shore excursions, with a couple of exceptions (the Big Island tour in particular was fantastic), but rather the 3 days in/around Honolulu and on Oahu before the cruise, and the four days on the Big Island after the cruise.
Ultimately I replied “Been on a cruise once, and it was OK but not great. Probably no more.”, mostly because I’m not going on a major cruise line massive ship cruise again. I could see myself taking one of those European river cruises perhaps, or maybe one of those smaller ships to Antarctica, or even one of those sailboat cruises, but not the huge Carnival or NCL ones ever again.