There's a big thread in Gen. Discussion here:
http://www.tfproject.org/tfp/showthr...threadid=40906
I agree with Sparhawk -- its really exciting to see humanity expand into space with all kinds of cool new technology, but I think that if the government doesn't get itself some kind of fiscal responsibility first, not only would a space program be a big burden, but it would be less likely to continue in decades to come.