There are better methods to define who need that help rather than the super rich opinion. The Gates Foundation model goes in that direction, approaching urgent things first: child mortality, education access, vacine distribution, etc... Those topics are more urgent than space travel according to the general consensus. A good way to define those problems is to check which social programs are being supported for the countries in a specific region. In Latin America for example, poverty is one of those social problems, rather than internet access, for instance.