Why are people giving up so quickly now?

Ok, so I understand this game can be frustrating sometimes but why is the degree of people giving up SO HEAVY and so often. We were down 4 kills, our top died twice and mid died twice and they'rel ike FF? This happens SO MUCH and the thing is, the laning phase is not even that huge of a deal as long as you don't feed or stop csing entirely.

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IT's so dumb, you can't even play normals anymore.