SR so Toxic

I play exclusively ARAM. About every 300th game or so I go back and try a Rift game. Everytime I'm reminded why I stick with ARAM. I played support. We won our lane, but still got crushed. Everyone was yelling, no one would listen to anyone else. I literally watched a Garen farm top by himself late game for about 5 minutes. I even asked him how the scenery was...no reply. The whole thing snowballed into the usual SR awful experience. My theory, is that RIOT is pushing ranked play way too hard. Most folks are casual players. For whatever reason, SR seems to attract many delusionals that think they are gonna break into Challenger at any moment. Then they blame everyone for their own shortcomings. And IMO, the whole game is becoming less attractive to the casual player. And there has got to be a way to address toxicity with stiffer penalty's. You'll ban someone for using smite on a support for pro play, but the most Toxic offenders typically get a slap on the wrist, as far as I've ever witnessed.
Don't worry, this will be my last rant about it. I won't get in the way of the next great challenger player. I'm very happy killing fools with friends in the abyss. Shorter, faster paced games, and no one trying to be the next DoubleLift, or whoever LOL. But man you rift guys reeeeally do need to lighten up. I never have fun there anymore.