Why do Supports NEED to heal?

[Kuzie-11442]

(MIG) The Wasted Potential of Overwatch Support Heroes

In order for non-healing supports to work the game would need such a massive change. Healing is too important to be able to sustain in fights and would both make long range poke unbearable and playing tank absolutely terrible. Maximum healing throughput would need to be dramatically reduced, probably to the point where healers like Ana ends up healing less than Zenyatta currently does so that healing can be easily overwhelmed with damage. Spam will also need something done, especially with how…

My thoughts from last time this topic came up. Healing is just too strong for a team to not have, and not having healing would just make hitscans, spam, and poke unbearable.