Space travel is possible, but is it worth all the time, money and effort anymore?

It was only about a century ago that the first successful airplane was invented. Since then, flight technology has been advancing at an incredible pace. I’m sure that many people before that time didn't believe that flying to outer space would be possible. It might not have even been something that ever crossed their minds. Definitely, times have changed. Space flight has been proven to be possible. Humans landed on the moon. Up-close pictures of the surface of Mars were taken.