Any travel which can be accomplished during one adult life span is feasible. Any travel requiring multiple human generations bred inside a space capsule...FUHGETT BOUT IT. I am guessing you never helped deliver your children in a hospital.
Your non-secquator reply indicates you have no idea what I was talking about by persisting with the present limitations as if they apply to the future. Human heavier than air flight was roundly believed impossible until the Wright Bros.