I agree that /r/the_donald is a poor quality experience, but it's analogous and in response to the poor quality experience of the /r/politics. They're both "circlejerks" that don't allow competing views to be posted. So while you may need to take the_donald with a huge grain of salt, if you're only get your news from left wing site like /r/politics, npr, huff po, new york times, and even hacker news for the most part, you could do worse than checking it out. (Though I would recommended Daily Wire, Daily Caller, and Reason as a counter points.)