I think a large part of my dissatisfaction with reddit was that I am getting older but the average redditor is getting younger. That and the culture of outrage and anger that you mention just don't make it such a nice place to be any more. If you find yourself holding the "wrong" opinion (or you have the "right" opinion but your words are misinterpreted), forget any discussion - let's go straight to the downvotes and death threats. Don't get me wrong, there is still some good stuff there. But it's swamped by a toxic ocean of shitposting as everyone tries to outfunny, outmeme, and outvitriol each other.
I got the same way, but I'm still probably younger than most of the site. It's just the involvement that everyone had in everything got me really agitated. Every little opinion got transformed into this black and white issue where there was an apparent "right answer". If you even tried to sway away from the consensus, there was 100 people there to try to set you straight. They acted like there was some conspiracy behind every little change, and if you were out of line, then you were just a shill trying to turn everyone into sheeple. Just look at how the front page is right now. It's just filled of directionless hate at everything that they believe is causing grief - whether or not it has anything to do with anything. Then there's just the lack of discussion. I had to move to the meta subs (subs that looked at Reddit rather than any content) in order to find any semblance of actual civil discourse. People there at least tried to see your point of view and actually challenged it - rather than use the standard "downvote and call a fucktard" procedure that happened in most places. People were there to just talk; not regurgitate the same stale meme that was posted 100 times before, often in the same thread, and in rare cases, the same parent comment (there's seriously been occasions where I've seen 10+ people use the same exact response to the same comment in a thread). I came here and it has been great. Everyone's so calm and kind. There's no scapegoats or wrong opinions or mindless hate - there's just conversation.