You lose a game if you make one mistake no matter how good you have been playing. Had nice score, full build, ok team score, but i didnt get around a single corner of the jungle where my teammates were. they got destroyed and Hecarim basicaly oneshot me even though i had 25% lifesteal.... We also had their nexus open for some time...
Now im gonna go to bed, but depressed because of that undeserved defeat...
Why is league so depressing?
Simple: 
is simply depressing. He affects the morale of nearly every champion in Runeterra.
Hotfix: Play 
. He is very therapeutic. He's like an SSRI for summoners. My league experience has become pleasant and relaxing hearing his voice overs.
Obviously YMMV.
Yep, that happens.. 40 minutes in and your partner decides he wants to get caught, then you lose baron and the game. Good times... Not much you can do but keep playing. If you're not the one getting caught, you'll eventually climb.
That sounds like more than one mistake.
