They all want to be remembered and worshiped for what they accomplished by seeing numbers go up in their bank account.
They are too egotistical to realize they would actually earn respect, adoration and have a legacy if they put their money towards helping the world be a better place. Instead they seem to think having a dick measuring contest via rocketships is a good way to help humanity.
I'd like to go around leaving big ass tips. 5 dollar coffee, here's a 1000 dollar tip.