I plan to conquer the world and all of its inhabitants... long after all of us here are dead or senescent. I guess it is easy to make empty statements if you make them apply to a far enough future. Mars colonies from Musk (still working on getting the colonists there in one piece of course), and all disease tackled!* *With $3Bn
With $56 billion, I'm inclined to take Zuckerberg a lot more seriously. He currently has eight times the annual R&D budget of Pfizer in paper wealth that has been increasing in value at a rapid clip (emphasis on paper, in that of course it may go up a lot more or down a lot, who knows). Tackling all disease is beyond grandiose; wiping out numerous diseases however is not - that would be an extraordinary accomplishment.