Shuttle Return To Space

Well, today the space shuttle Discovery was to return to space. The scheduled lift off time was 3:51pm EDT, but do to a faulty sensor the mission was aborted. I'm kind of a open minded person, but why are we spending Billions of dollars to explore space anyway?. The monies NASA spends or has spent over the years could feed alot of our fellow citizens right here in the United States. We have people on the streets with no food, no shelter, no clothing. In other parts of the world third world country's have people in the same situation we are in here. We have the Hubble Space Telecope to see what is out there in deep space. We don't need to be going out there to investigate it. The Hubble has sent back some great photographs that we would have never been able to see or know about. I say lets repair the Hubble and update the instruments on board and keep viewing space from a SAFE distance.