About four years after I switched to recumbents, we took our first recumbent tandem ride on a Double Vision. The ride was a fairly long one, about eighty miles, with a tough head wind for the last thirty miles or so. We sold her carbon fiber road bike several months later. Incidentally, Barb feels she is a little faster in the head winds and is at least as fast when going up hills. I found the same to be true.
Many people find long rides on upright bikes to be uncomfortable.
One problem with upright bikes is that your legs hang down around the seat. There is simply too much pressure per square inch. Of course you can take weight off your butt by leaning forward onto your hands but then wrists, hands, shoulders and neck feel the discomfort. Sitting up straighter takes the pressure off the hands but puts it back on the butt and makes the rider less aerodynamic as well. The conventional bike industry is working hard to try to make an inherently uncomfortable design more comfortable.