I think John Oliver did a pretty good take on the difference between Donald vs. Hillary in his last show. They even uploaded the clip about Donald vs. Hillary online for others to take a look:
Bottom line for me: Yes, Hillary is bad, but Trump is so, so much worse.
There is something most people should remember though:
There are more choices than simply Hillary or Donald. While I wouldn't recommend Gary Johnson (I'd put him as 2nd worst, right after Trump), I personally support Jill Stein, of the Green Party. Yes, Jill's currently polling at just over %2, but if you can't stomach supporting
the lesser of two evils, as Colbert so brilliantly put it, you can support her anyway. I like to think of it a bit like the film 300. They know they're not going to win, they just don't care; they're showing people the right thing to do, so that maybe next time, people will support the right candidates, instead of the wrong ones...