There are more choices than two. There is a respectable person going to be on every ballot in the election. IMO since Trump cannot win, a vote on him is a wasted opportunity to make a strong showing for a 3rd party. Slither out from under the refuse pile that is the two party scam and let your voice ring out that you will no longer support the vile, corrupt system.
I think that is exactly what many who support Trump are doing. Whether Trump is or isn't part of the "two party scam" or the "vile, corrupt system" is an interesting discussion. But many who support him believe he isn't and are supporting him for exactly that reason.
Many who do not support him, may well give him their vote so as to oppose Hillary. That is also a perfectly valid reason to cast a vote.
I note that even my usual go-to of the Libertarians are unacceptable to me this year as Gary Johnson is far too hostile to religious freedom to warrant support from anyone who values (all of) the 1st amendment.
This means that none of the top
THREE candidates are truly acceptable to me.
I can accept a guy who supports BOTH the right of druggies and perverts to live their lives as they see fit as well as my right to live my life as I see fit. But if he supports only the left wingers' rights while subordinating my rights to their whims, that is a non starter for me. Not to mention the fact that he is a little soft on RKBA for a Libertarian.
That leaves a "4th party" candidate. Some may be great. Others may be nuts. How does one know given the absence of vetting for most such "also rans"? If you do know, great. But it isn't like it is just the two (or three) major parties whose candidates have a habit of saying one thing and doing another or having some rather unpleasant skeletons in their closets.
My opinion:
If you live in a solidly red or blue State such that your vote is extremely unlikely to change the outcome of the electoral results: Vote for the best possible candidate you can determine, without any concern about strategic voting.
If, however, you live in a swing State, I think a person ought to give some real thought to whether they prefer the worst of two evils over the proverbial "lessor of two evils".
I also tend to wonder about anyone who attacks one side as being unacceptable, while not pointing out how unacceptable the other candidate is. If countryclubjoe wants to assail on Trump for his bad conduct, while giving Hillary a pass on hers, I have to wonder what his real motives are.
Charles