I know most of the lore for the game so far, but does any explain why it is reasonable for the characters to fight, if they always just respawn a few seconds later and rejoin the fight?
Is there lore for Overwatch characters infinitely respawning
overwatch
Best Answer
The confrontations that happen in PVP matches are not canon. They're framed by the lore, but they can include clearly nonsensical things (Like 6 Lucios battling against another 6 Lucios). Certain characters have 0 reason to work together, like Tracer and Widowmaker, yet gladly do so.
Until we see otherwise, there's no reason to assume these PVP games are actually occurring in the Overwatch timeline. Think of it more as providing a backdrop.
Some of the characters, upon respawn, make mention of "the wonders of modern medicine". This is probably the best you will get for an explanation of the respawning in-game.