Anyone flying a fighter jet in aerial combat with other fighter jets knows what they signed up for and are facing opponents who signed up for the same thing.
War is terrible, but this is one of the very few situations in modern combat where there is a clear line between civilians and the combatants. Everyone engaged is a willing participant.
In this situation I'll apply Doug Stanhope's logic:
> As long as the people who kinda wanna go kill other people are going to go kill other people who kinda wanna go kill other people, you're killing all the right people and opening up all the best parking spaces.