I actually feel bad for the Republican Party right now. I wish that every political party would nominate their very best candidate for President. The race should be competitive so that whoever wins works hard to keep the job.
Trump doesn't seem to care if he wins. He wants to run his mouth. He says things that sound great to the GOP base but make everybody else mad. Name recognition and wealth were enough to carry him through the primaries. But it's way more fun to run for President than actually be President. Do you know all the pressure you feel in a job interview? Trump feels none of that, because this is a game to him. No matter what happens, this will all work out for him. A billionaire who wants to be President is absurd as a millionaire who wants to work at Wal-Mart.
Both Hillary Clinton and Donald Trump have high unfavorability ratings. In past years people have talked about "wasted votes" and what not. But this year, the only reason NOT to vote Libertarian is if you actually DON'T want a Libertarian in the White House and you actually would prefer Hillary or Donald to Gary Johnson.