Let me, then, give you an alternative point of view, Tin Can.
My father is 54. My mother is 50. They lived through "Carter's mistakes" and all three of us lived through Reagan's. Indeed, Reagan fixed things for my father (and hence for me) by doubling the enlisted paycheck. My father thinks that Reagan was a great man.
However, we both agree that he wasn't such a hot president. See, my parents were there for the Carter years too. And they don't think that he did such a bad job.
Now, I have to ask you: if GDP was up, unemployment was declining, and the economy was growing WHEN REAGAN TOOK OFFICE, how can you say that Carter left the country in a shambles? Perhaps (now this is just a crazy idea) his administration put the cart back on the tracks?
Perhaps, the Vietnam War had screwed over the US economy pretty badly, draining it of both money and manpower. Perhaps--just perhaps--Carter took over a bad situation. Maybe, just for the sake of argument, his fiscal iniatives, which whilst not entirely effective, were the start of the 'prosperity' (if you want to call it that) of the Reagan era?