Earlier quoted context omitted.
Why do you assume there would be no kids? How else will we populate our solar system.
I remember the times where colonizing the solar system was a means for our collective survival, not an endgame for which we irreversibly change our society. That aside, we could populate the solar system just as well with people who live a healthy century. It only takes a few months to get to Mars with the current technology.
Will you join me in making this dream come true?