Why say 'why?' in-game?

Whether someone makes a misplay or they get caught out or anything happens that results in a less favourable situation for your team, and you honestly could not possibly care any less than you do at that moment as to the specifics, the mindset/reasoning: why do you even BOTHER to type: "why?"

It's unproductive. You don't care WHAT the answer is and have quite clearly already made up your mind that you're going to have a seething hatred for that person anyway.

You don't expect an answer and even if they do say why, you will immediately dismiss it no matter how reasonable it is because in all likelyhood you weren't even paying that close attention to the inner workings or simply don't know how some champions function .

For a quick example: In the past, I've had games where people expected me to ult as Nunu with next to no AP built -needed a fully committed tank- Nasus and Sejuani were both going full damage and threats of AFKing all-around pushed me into stacking as much armor/health/magic resist as humanly possibly, enemy team was 5 super mobile champs and 3 of them had a stun they were smart enough to hold onto SPECIFICALLY to cancel my channel as soon as I cast it). No, the AoE slow would not have helped anyone escape.

Team dies, as expected, they ask that one-word line which is infuriatingly stupid and pointless.

"Why?"