I think so. Pain is a way of alerting us that some damage took place and that it needs to be taken care of. I imagine the brain would evolve to ignore pain sin

I think so. Pain is a way of alerting us that some damage took place and that it needs to be taken care of. I imagine the brain would evolve to ignore pain since the people who feel it less would have an advantage over the ones who feel it even if both were self-healing. We already have a version of this with adrenaline to numb the pain so that we can get out of a dangerous situation.