"Seeing the curiosity rover land was very cool...but it just made me think, back in the 60's, NASA was able to get a man on the moon starting from scratch. We already have the technology (Nuclear engines) to fly to mars in about two weeks, if we just had the balls and the will power to do it. Rather it was America, China, or countries working togethor. SO WHY THE HELL HAVENT WE?" - VivaLebowski
"...Everyone is concerned about making money it would cost a crapload to do a big mission like this..." - Victory Element
The thing is, if all the major powers in the world were to unite, there wouldn't be a need for making money. The incentive behind working together would be to further the advancement of their nation to a better standard of living. If people could just get over boundies and selfish desires we, as a species, could have no limits. Colonies across the universe, potential contact with other intelligent life, new resources, and so much more.