Why do you guys?

Play roles you completely suck at? I often find this an issue, we’ll be losing the fight hella bad, then players will switch to a role theyre good at and end up helping way more then the original choice. I often see it with people tryna be tanks or people tryna be DPS, like just play the role your good at. It’ll help a lot more. Just wanted to pick ya minds on who and why yall do that?