Winston's gun can't shoot distant targets, but pretty much auto-hits close ones, and Roadhog has a shotgun that can easily hit close mobile targets, for instance. Of course, all this depends on the hero you're using. I can easily melee a Genji jumping back and forth over my head, whereas I would likely miss them with most weapons. Also, it's often easier to hit them with a melee when they are very close than it is to hit them with a gun. If somebody is right next to me, I might as well punch them, rather than wasting a round from my gun that I could use on a more distant target. So, I use melee attacks to extend the amount of time I can do damage before having to reload. It's best to reload during these times, rather than when you're actively fighting. Much of the time, you have nothing to shoot at. You're not continuously damaging a large target that absorbs all your bullets all game. This is because calculated dps is a theoretical number that doesn't actually matter in most game situations. But in the wake of the Omnic Crisis, the government made a controversial move, gifting the land to the omnics who. After the Omnic Crisis, government officials gifted the Australian omnium and the surrounding area to the omnics that had nearly destroyed their country, hoping to establish a long-term peace accord. Mako Rutledge was one of the many inhabitants of the Australian Outback whose land was seized and used for the construction of an omnium. Roadhog is a ruthless killer with a well-earned reputation for cruelty and wanton destruction. Roadhog's primary attack after a hook does plenty damage and most heroes would be released from a stun by the time you can shoot again, so melee in this case is guaranteed damage to the enemy.ДЄlthough adding melees will not increase your overall dps, it can still be quite useful. Roadhog is a ruthless killer with a well-earned reputation for cruelty and wanton destruction. Sometimes you can see you need only so much damage to finish the kill and it would be much faster to do melee damage than it would be to even do a normal attack.When you're in the middle of a fight, and you're out of ammo you can melee as a last hope, or if you have some ability - melee and use that (melee + Mei's Cryo-Freeze, melee + Genji's Swift Strike) Genji has so much ammo at his disposal to do 84 DPS, after which, he needs to reload, so does Mei. More importantly melee is used to output just a little bit more damage when you have nothing else to do.Instead of waiting for the animation to end you can quickly sneak a melee attack. The developers state that melee can be used to cancel ability animation.There are some exceptions where you can and in fact should use melee: Melee does 30 DPS which is lower than any primary attack so its not viable to use constantly and all the time.

Roadhog gamepedia