I certainly agree that NASA isn't going to run a space motel. However the motel can't succeed with expendable launch technology because there aren't enough people willing to pay $20M for a space vacation. However if a less expensive technolgy based on RLVs can be developed, then space tourism could become viable. Performing R&D and assisting private industry in developing practical reusable aerospace vehicles with lower operational cost has been a NASA mission since its founding in 1915, and could help the US develop a new industry that would help our balance of payments. Therefore NASA should use tax dollars to help Bigelow, Musk, Rutan and others develop the required technology. We should do this promptly and efficiently but aggressively. Similarly other NASA applications programs including weather satellites should get more support and more leadership attention.
In contrast, building the Ares and Orion capsule, which would have a seat cost to LEO of over $50 million, would contribute nothing to US exports. The HLV, which would have a launch cost well in excess of $1 billion, would not be marketable for commercial satellite launch. While assertions have been made that Constellation would provide assets such as helium-3, these assertions are not supported by even a superficial analysis of the technical and economic factors involved. If there's anyone online who can provide any analysis showing a positive financial return for the elements of Constellation that are sitll funded, I would be very interested in seening it.