SSTOs have been "just a few more years now" away since before I was born. Pardon me for being skeptical, but I'm skeptical. A two-stage approach seems like the closest we'll come in the forseeable future.
STARGAZING: All I see are the lights of a billion places I'll never go. --Howard Tayler, Schlock Mercenary
"It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change." Charles Darwin
"It is the duty of the writers to seduce me into suspending my disbelief!" Paul Beardsley