From someone more or less in the middle, a believer in the middle way. Someone who has never belonged to either major party, who is totally disgusted with both, I think both need to be thrown onto the trash heap of history as both practice what you say you hate. They divide this country very happy to pit this group of voters against that group, make them hate each other in hopes of getting their group/s fired up along with having more people hate the other guy, party than you and yours.
I have news for you, both parties view the other as this nation's number enemy. Out to destroy this country and only their/your party can save her. I don't know what caused this hate, this polarization, the ultra, high partisanship, but it's tearing this country apart.
Trump is nothing more than the end product of all the above, he's isn't the cause, that might be traced back to the 1990's or even before. But the hatred of one for the other party really didn't begin, at least in earnest until then. Maybe it's all this modern technology and social media, I don't know. But I have a feeling we're not going to last much longer regardless of which side comes out the winner if either side does.
Whether Trump wins or loses in November, they're be much more hate, much more divisiveness, much more polarization, violence, burning and death all caused by both major parties mega partisanship and hate for each other. Mark my word.