Some people criticize Musk for investing in space travel instead of focusing on making our home planet better. He addresses those complaints here:

"THERE ARE ALWAYS PROBLEMS ON EARTH. THERE ARE ALWAYS THINGS THAT WE WISH TO BE BETTER AND SOLVE HERE ON EARTH AND WE SHOULD SOLVE THEM, BUT THERE ALSO HAVE TO BE THINGS THAT GET YOU EXCITED ABOUT THE FUTURE, THAT MAKE YOU GLAD TO WAKE UP IN THE MORNING BECAUSE YOU CAN'T WAIT TO SEE WHAT HAPPENS NEXT AND THAT'S THE FUTURE THAT SPACEX WANTS TO BRING TO YOU."