New Minion Waves Are Ridiculous

So I just played a game tonight and didn't know about the wave update. But it left me with a bad impression. Let me explain. I was Garen top lane per usual and happened to be winning lane, but my team wasn't doing so well. I decided to leave lane and try to help them out with a few team fights and a dragon kill. While doing all of this, I noticed that my tower was taking a lot more damage than normal so I had a to make a decision. "Do I stay with my team and try to help them out with these team fights and let the minions run through my turrets? Or do I abandon my team, who at this point is struggling to keep the game competitive, and keep the minions at bay?" I chose to try and fend of the minions and my team REALLY paid for it. We wiped and the enemy team got a baron. We lost soon after. These minion waves are weird, man. Its like you get punished for losing. I don't like this new mechanic at all. I hope they revert it, because I am not a fan. Also, I really can't see this boding well for the community. Like, since your team is feeling more pressured than ever to perform well and not die, imagine how much more toxic this community will become. Like Riot's efforts to clean up people's attitudes was all for nothing because now people are just going to tear into you if you die ONCE. I have read a few other threads and tried to see the reasoning behind the new wave mechanic, but I fail to see how it will help a losing team. I feel like the situation I was in will happen a lot more often now. Rant over. Tell me what you guys think.