Stupid reason to report someone

[Mimilu]

Or not. Just let people play how they want. You don't pay for their sub.

That may be true but this is an MMO, i.e. other players are playing and paying subs too.
If you can't play your job efficiently, then you are interfering with the other players in your party and forcing them to pick up your slack.
For healers, this means being able to balance healing and DPS. It would be one things if the OP had to compensate for a squishy tank or DPS that are prone to being damage but to just say "I don't wanna" seems lazy...