I grew up in the Carribean and while I learned to sail on small dinghys, etc. catamarans were everywhere and most larger boats were cats or tris. Until we bought our E38 all my big boat experience was cats and tris. I prefer the lack of heel especially if I have to spent time below. My E38 can be miserable underway compared to my recollection of cats and tris in decent weather. The thought of a holed monohull is fairly creepy to me. That heavy ballast pulls them straight to the bottom. Most cats and tris remain positively bouyant even after structural failure. I would rather float with or maybe on the wreckage than be stuck in the water or in a liferaft. At least there is the possibility of making a choice of staying with the wreckage or using the liferaft option.
The problem I see with cats and tris is that the cruising designs are overloaded to the point that all the advantages of these designs are negated. Most of them are just big, flat floating condos. A properly designed tri or cat will be much faster than a mono provided it is not overloaded. But this is a compromise. That speed means you have to live with less comforts, less space, etc. Its a tradeoff. The speed also means you spend less time on getting there and more time enjoying the destination. I really like the Corsair 31 trimaran. Even loaded for cruising it will be much faster than my E38. But I would be giving up a shower, decent galley, cold storage space, tankage, etc.
Its a tradeoff but I wouldn't hesitate to jump on a multihull for a passage provided I trusted the boat and skipper. RT