I too am disappointed after following politics for 70 years but see no reason to drop out. I had that decision to make in the late 60's. I didn't drop out then and have not regretted that decision.
However, I also understand that these ideas and leaders are not a new thing. We have had such situations since the beginning of the 1776 experiment. Is this worse that the Klan's influence in the 20's, worse than the anti-Semitism and Nazi rallies of the 1930"s. worse than the McCarthyism (and racism) of the 50's? And we've had similar periods of darkness before that.
I don't know how long this era will last. In many ways, the country is yet to survive the aftermath of 911 with its resulting militarism, wars, and racism. I thought that we had a chance to reverse things more quickly with the election of Obama, but he was too soon.
One bottom line is that the world and its people are not in the horrible times that the social media and politicians want us to accept. We will continue to move past the bumps of history.
============
I think that we have been spoiled by living through the politics from 1976-2010 where there were great struggles, with generally common goals and purposes. Long gone are the vision of or Reagan and O'Neill sitting down for a beer after the day's political fights. Long gone are the cooperation between Dole and Teddy Kennedy in the Seante. Even long gone are Nixon's cooperation with China and his sponsoring of the EPA.