I think that a clear view of the horizon is more important that the rolling issue. If you can see the horizon, you can deal with motion. If you can't, you are far more susceptible to sea sickness. Mal de Mer is perhaps the worst thing in the world.
With old fashioned multihulls, like Pivers or CSK, the waterplane is very small, so the rolling and motion is benign. Also, most have big windows, so you can see the horizon. Most are plywood, so cheap, but only get one in "perfect" condition. Rotten wood is a bad thing. But if cared for, plywood boats last nicely seemingly forever. And the care isn't that bad. Even fiberglass boats, you need to repaint, deal with blisters, rotten cores, etc.
When you are living on a boat, the maintenance issues are right in your face, so its not that hard to stay on top of everything. But you must, regardless of the kind of boat.