What's the harm in trying to go to mars if it results in decreasing the cost of space flight by 99%? IMO, the harm is that the weirdo billionaire who wants to

What's the harm in trying to go to mars if it results in decreasing the cost of space flight by 99%? IMO, the harm is that the weirdo billionaire who wants to do this has said that he needs a trillion dollars to accomplish it and subsequently embedded himself within an incompetent, would-be-authoritarian regime. I want humanity to colonize Mars and space. I don't want it happening at the whim of a madman whose only concern is going down in history as the man who made it possible at any cost to society.