We fly first class, and still don't check bags. It's just easier to be able to get off the plane and not have to worry about hauling bags around. Of course, we used to have to wait for checked bags in SXM, but with the new covid protocols and reduced number of passengers, that probably wouldn't be an issue now. It's a bit of a PITA to have to buy sunscreen, shampoo, and such on the island, but for me, the convenience of carry-on only is worth it.