If a compelling economic reason arises, travel times under current technology aren't unreasonable. In the age of sail, whalers and merchants routinely went on e

If a compelling economic reason arises, travel times under current technology aren't unreasonable. In the age of sail, whalers and merchants routinely went on even multiyear voyages. There are other life-support challenges to surmount, but then again, we'll probably end up with robotic spacecraft anyway doing long haul routes, and that becomes more moot.