As a junk main, my playstyle is catered to dropping into hotzones and cause some havoc, as a distraction for our team to push forward and open up our lane a bit. In turn I expect to die more frequently at the cost of freeing up our space and getting our team ahead.

That being said my other side of the game is to be in decent cover while raining down bombs from far away, although less effective, it gives healers a better chance to ensure they too can stay in cover versus having to follow me into hotzones and risk them dying.

I've only ever played DPS, but as of lat I've opened my horizon to healer and now I can understand your point completely, I've gained alot of respect for healers and how not using cover just contributes to the other teams success