First paragraph: yes, every person needs to make their own assessment. But we shouldn't make those assessments from the mindset of a purist. Hillary Clinton is not an IT admin. She handled her email in a functionally similar method as her predecessor, Colin Powell, the only prior Sec. of State to have any real use of email. She happened to do so at a time when email went from a fringe form of communication in political circles to the most popular method of correspondence in the entire world. This was also at a time of rapidly increasing cyber security risks and a rapidly evolving standard of "secure".
The FBI has never said that she herself sent classified information, just that she was included in seven chains that somewhere within did include classified information.
Would you want to hire Clinton to be the IT director of a company? Obviously not, but then that was clear well before this. We're seeing this all directed at Clinton when in reality the federal government as an institution has been slow to react to the rapid advancement of communication technology over the last few decades in general. It was a case of poor judgement to not just use two distinct accounts with the second being the .gov account but this should have never even been her decision to make.
As for the second paragraph: equating Hillary Clinton to Donald Trump on the "two worst options" spectrum is, frankly, moronic. She is a very intelligent, very capable, and very proven public official. Donald Trump is a con man either playing to racism and xenophobia or himself an ardent believer in those most base elements of his populist movement. Clinton might, depending on what you believe, have issues with transparency and open governance. Donald Trump is literally a neo-fascist.
Hillary Clinton would likely be an effective and generally progressive POTUS, if not the most transparent or transformative. She would likely serve the post better than George W. Bush ever did, Al Gore would have, comparable to her husband's tenure, better than Dole ever would have, and better than any of G.H.W. Bush, Reagan, Carter, Ford, or Nixon. So "worst choice" but still likely to be better at the post than everyone but a handful of all the options we've had to even choose from over the past ~25 years and better than everyone who actually held the office for about 25 years before that.
Truly a worst case scenario though, right?