Even though NASA may be winding down part of its space race program, it is not getting out of the biz altogether. In fact NASA is taking steps to insure that humans will be exploring space for eons to come.
The U. S. space agency has just put out the word that it is looking to spend around $200 million for a space fueling station that can safely store liquid hydrogen and liquid oxygen. The liquid oxygen storage must be no loss (zero boil off) and the liquid hydrogen can be minimal loss.
This minimal loss of liquid hydrogen is acceptable for two reasons. First, liquid hydrogen has to be cryogenically stored at -423F. Second, the space fueling station will have to content with heat from the sun and other obstacles.
The space fueling station will not likely have any impact on space tourists flying into low earth orbit (LEO). But, in the future when tourists travel to the Moon, Mars or beyond, a space fueling infrastructure will be needed in order to carry passenger to and from locations swiftly and safely.