Prepulling mobs as healer

[Halivel]

It wouldn't matter because damage is negligible in situation I'm talking about and I'd be able to tank as healer. Beside that I'd never understand why you'd switch to single target solely for the reason of "punishing" the healer, seems pretty childish to me.

I'm not the one to do this. However, there are plenty of people who could do this out of their principles or being annoyed strongly enough to change their routine. People are different. The fact you or me wouldn't do something doesn't mean other won't either.