I don't think ISS is garbage. On the contrary, I think it should be kept as long as possible, because there won't be any replacement. There won't be a space station of this magnitude in orbit for the next thirty years at least. If NASA doesn't want to participate in it any longer, it can sell it's parts to current participants, to India or some private company (if some would be ready show that their ambition really is as big as their mouths) or something. It's better than destroying it when there's nothing else. What comes to private companies, I'm saddened by how easily snake-oil salesmen from private companies have been able to sell their non-existent future launchers to US government. Elon Musk and his colleagues in the space business couldn't put a Mercury capsule into space now or in the near future, and certainly not send crews to ISS. Even the unmanned US cargoships to ISS might never materialize. But, in a too typical US fashion, declaring intending to do something has been taken as equivalent of being capable to do it. Just dream big and people think that you have achieved your dreams by speaking them loudly and eloquently. US astronauts won't be riding in space on private US launch vehicles anytime soon, they will end up buying more places in Russian (and perhaps later, in other countries') spacecrafts. Kistler should have taught US government and NASA that big dreams are not equal to being able to do something. But, it hasn't.