Just because you're in war, doesn't mean you can't strive to do some good in the process, hell, even strive to come up with a plan to cut the head of the serpent as soon as possible to minimize casualties rather than prolonging the war

Currently I would see that there is balance, neither the demons nor angels rule the humans, and both angels and demons still exist, if one of which would have their way, the other would be wiped out and humans be enslaved, which hasn't happened, yet, so there is that balance, but that's soon to be shaken and tested, and that's where MC and his crew comes in