As much as there are pros and cons to elon and his wealth and where it came from, IF he spends his fortune how he says he's going to then maybe it's totes fine that he has all that money to decide what to do with. He says he's spending it on SpaceX to make humans an interplanetary species.. launch off Earth, colonize Mars and other planets. He's not wrong in saying that "If we all stay here, we all die here," much like dinosaurs and other species that have inhabited Earth in the past.
He figures we have less than 100 years to start launching off of Earth anyways as we've screwed the planet so hard it's going to become uninhabitable for people in many areas - too hot and dry. If he's right on that vs. full of s**t, then it's worth his success to fund the rockets to launch some space explorers and raw materials off in every direction to start little people colonies here and there and hope that through technology people can populate other worlds, too.
And if it's all BS, well, whatever.. at least rockets are cool. 
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No

for supporting trump. Because doing so is deplorable.