Why play a game if you won't put the effort in?

I ask this since when your team starts losing and the rage starts showing. There is always that one guy saying something like "Its just a game, chill." or "Why so serious?"

I know its one thing if someone is being overly serious, or expecting the entire world on a platter in solo que. But if someone is doing extremely horrible and you just ask what is going on, or ask them to be passive and you get such a reaction, its like seriously? Just went into a game and our Lux support went 1/12/3 and when I made a comment on why they are doing so poorly while their ADC was like 2/3 so it clearly wasn't because they were both getting trashed. They responded with "It's just a game, who cares?" (I played Lux before as Sup, she is one of the easiest Sup even for a new person, just throw some Qs in the enemies direction and W your ADC when a fight starts, little difference from Morg and she is extremely easy to Sup as.)

If you can't put the effort into a game that involves several other people then don't bloody play. People don't expect the world from anyone in normals. And its usually clear if someone is new to a champ or not, or its usually a lot more easier if they explain they are new. But if you are just feeding nonstop then act surprised when someone notices and says something, either listen to what they are saying if they aren't being an ass, or don't even respond. You can usually tell between someone playing badly and someone that doesn't give a ratsass. At least the bad is trying to get better and is usually open to advice if it isn't said in a rude way, the other is just complete trash that ruins the game from the beginning since there is no reasoning with such people.

So anyone have such happen with them? How you go about it? Just feels like these people are even worse than AFKers since at least AFKers don't feed the enemy. I would rather have a 4v5 than a 4v6 since they are giving free gold away.