Quote: "Oh, and then there's the prolonged exposure to solar radiation with little to no protection. "
Heard of rad suits
? Hardly a huge challenge to build current radiation protection into the bulky space suits we're using right now.
Quote: "You clearly haven't thought that statement through, you'd be lucky if the crew hadn't already killed eachother off by the time they reached their destination."
Scientists have spent months in space in spaces smaller than a tiny apartment before. They're trained and focused professionals
.
Quote: "You need a pretty damned big rocket to escape the earths gravity completly."
I may be wrong but I believe that it's actually relatively easy to add the extra power to escape Earth's gravity; the problem is getting back into it, so we haven't tried
. Once a small object is out as far as the moon is it takes hardly any energy to escape Earth's gravitational field.