I don't think I disagree with what you remember or your impression but I'm an "oldie" as well and was certainly around at the time. Putting things in perspective, the nation didn't vote as your memory implies. What the vote does indicate is that at that point we (the nation) were sick and tired of a no win or at least a confusing or non-resolute strategy.
I agree, Bates. And here's my anecdote to summarize this attitude by the majority...a college friend joined the Army shortly after receiving her degree, eventually becoming a recruiter. When she went for her first interview before signing on the dotted line, they asked her what was her opinion of the ongoing War in Vietnam. She told them...exact words..."Either we should get all the way in, or we should get all the way out".
Perfect.