Your "They aren't principled. At least not in a moral sense." is an example of what is wrong with politics today, and you should be ashamed of posting it. Everyone, including Hillary Clinton, agrees that using a private email server was a bad idea. Obviously it makes complying with all of the document retention rules that were in force harder, but that is not the same thing as impossible. At the time she had it setup that was a fairly common practice, one done by other department heads and her predecessor.
On the classification side of things, there is not a lot of solid information about whether something bad was actually done or not. Yes there are seven email threads (twenty-some emails in all) that contain information that is now considered classified. So far no-one with any knowledge of those emails directly has commented on whether that information was classified when those emails were sent. We have heard that those emails did not have classified markers on them, but that again does not mean that the information was not classified at that time.
If the information in those emails was not classified at the time it was sent, then there has been no real wrongdoing here. If it was classified, and there was wrongdoing, then we finally have something to talk about. But up to now this is all unfounded allegations, conducted as part of a witch-hunt (that is an accurate description of the Congressional Bengazi hearings) that has already been called by it's leaders politically motivated. If people really think that this was an issue, and are not partisanly motivated, why is no-one looking into those other department heads or her predecessors?
So, saying people who support Hillery Clinton are not morally principled is an example of unprincipled partisanship. Please wait for facts before accusing anyone, let alone making accusations about their supporters. There is plenty to legitimately disagree about in the actual issues in the campaign, without resorting to unsubstantiated mud-slinging.