MONEY Queen Isabella actually said "SHOW ME THE MONEY!" Actually what she said was probably "Muéstrame el dinero." Earth's explorers were motivated by profit. Unfortunately there isn't ay material which is worth the transportation cost. The apollo program cost $100 billion in today's dollars. The program returned 843 lb of moon material (rocks and dirt). This is the most that they could bring back. If they could have brought back more they would have. This works out to $118,623,962.04/pound for samples of rocks and dirt. And this is just for raw materials. They didn't have to process it, just scoop it up. The most expensive material that I know of is plutonium, and the last time NASA bought some from the Russians they paid about $3.5 million a KG or about $1.6 million a pound. Mars being over 100 times further away than the moon, transportation costs would be comensurately more. If you want some special rocs and dirt I happen to have some real bargains that I can let you have for $50 a lb. (10 lb minimum) GUARANTEED TO HAVE THE SAME ELEMENTS AS MOON OR MARS DIRT!
You clearly don’t understand the actual reason for the Apollo project.