Playing LOL suppose to be relaxing and fun...however Its not the case when someone start to curse

Wtf..I just picked a wrong champ and died for a few times One of my teammate started to curse me and wished i would die of cancer... FML, I just hope to have fun in LOL , why being so rude??

What really matter is that, I typed in "ALL Chat" when I tried to argue with that user..

Hope the other players could accept my apologise, Im not talking about you and dun mean to depress you guys.