re: Interstellar travel
Why would one believe that future generations would be interested in colonizing another world?
Are children generally just as enthusiastic as their parents are about an issue?
Isn't it just as likely that before they got half way there they would decide to turn the ship around and come back to Earth the home planet they had been told so much about?
After all what right did their parents have to commit them?
And what about their right to choose?