People who are older or with limited mobility find it far easier to get see multiple destinations without having to unpack/pack, navigate difficult airports, etc. I have been on a few, and while I’m not the biggest fan, they’re not terrible if you are traveling with folks who have mobility issues. I would not go on a cruise after COVID, though.

They’re also far less expensive than many other vacations, especially if you have kids and are considering Disney stuff.

Still a human Petri dish.