For most of us it crops up even before we purchase our proud new vessel. Certainly if not then, it will be as soon as we bring something aboard. It could be as simple as groceries, but I'm thinking more in terms of gear and equipment. Of course we do. Sailboats are a compromise.
Catamarans are the maximum compromise.
In order to have something, usually we must do without something else. Comparing monohulls of the same length, cats have more interior space, but there is a weight factor that is more crucial to cats than dogs. Oops, I mean monohulls. We might be considering a generator, a watermaker or a scuba compressor. Maybe its a deep freezer, a washer-dryer, or an extra spinnaker.