That's why you choose the marshmallow now and can't wait "15 minutes". You want instant gratification now. I want the human race to move way out into the solar system, permanently, and in a big way.
And I don't believe the general public will fund it without the hope, however distant, of getting into space themselves. They have been promised too much that hasn't come true and scientists are currently telling them that they are doomed anyway.
http://apod.nasa.gov/apod/ap140919.html