When my team ignores calls, danger pings, just generally does whatever they want whenever they want with no regard for even the tiniest sliver of strategy.
All game I was ahead of Karthus. All game I was asking, begging my team, "Please can we group as 5, we can kill them all." All game I was ignored.
This happens over and over and over again. I don't think I'll be playing ranked anymore. I don't care at this point if I end the first season in 5 years as bronze. The stress of pushing myself to perform well enough to make up for 4 other people's lack of effort is just too much, it's exhausting and frustrating, and I don't feel like spending my free time being exhausted and frustrated.