[ThaddeusQuay2]

"Because if it wasn't for men like them, we would still be sitting in a cave poking a fire with a stick."

Because of them, we now have large sticks which take us to space by poking the Earth with fire. :)

I agree with your entire comment. Think about the explorers of old, crossing oceans and continents, in hazardous conditions, with little technology to aid them, and with even less knowledge of where their journeys would lead. We stand on the brave shoulders of the countless who have come before, and it would be an insult to their accomplishments if we, as humans, suddenly abandoned, in the name of ultimate safety, the wonder of exploration, and the courage required to see it through.