See, here’s the thing.
I’ve seen photos from space (the spacewalk thread from earlier today for instance), and know that there cannot be an experience like it. I’ve been an astrogeek for about as long as I’ve been able to stand. As a kid, I had a Saturn V in my bedroom (just a model, my bedroom’s not that big). I’ve read biographies from Shuttle MS’s and had lunch with an astronaut. I get the sense of wonder and awe, perhaps far more then the early astronauts ever did thanks to the the benefits of some quality astrophotography.
I’ve also seen the tech these guys were running, first hand. I’ve been to the Smithsonian Air & Space Museum in Washington DC and the Kennedy Space Center in Florida, as well as viewed exhibits in our own Science museums. I’ve peered into the Command Modules from Mercury, Gemini and Apollo, including Friendship 7 (John Glenn’s CM). I’ve seen a real Soyuz and a lot of models of various Russian craft including Vostok.
In my humble opinion, the single most incredible thing about the entire space programme (either US or Soviet) is that at no point did the astronauts take one look at their spacecraft and go “you’ve got to be f’in kidding me, there’s no way on god’s green Earth that I’m getting in -that-.”
So, the point I’m getting to with all this, is this: If you think for a second that the early astronauts (or indeed, all of them) didn’t have cajones so large that the scientists and computers had to compensate for the gravitational effects of their plums when calculating flight paths, then you sit somewhere on a scale between “smug git” and “buffoon.” Sorry.
I’d be surprised if there is any modern Shuttly crew member who doesn’t step through that hatch, having said their goodbyes, wondering whether they’re going to be dead in the next couple of hours. Yuri Gagarin, hell fire, Vostok wasn’t even landable, his re-entry drill was to jump out of the sod at four miles up with a parachute on his back.