Not being privy to the mind of god I don't know who is the more morally upright, the soldier who goes to war for his country and community, or the indivdual who opts out. Maybe it depends on the country, and the war. Maybe it depends on the reason for opting out. But I do know that if everyone opted out, we'd all be better off.
"Colonel Cathcart is our commanding officer and we must obey him. Why don't you fly four more missions and see what happens?"
"I don't want to."
"Suppose we let you pick your missions and fly milk runs?" Major Major said. "That way you can fly the four missions and not run any risks."
"I don't want to fly milk runs. I don't want to be in the war anymore."
"Would you like to see our country lose?" Major Major asked.
"We won't lose. We've got more men, more money, and more material. There are ten million men in uniform who could replace me. Some people are getting killed and a lot more are making money and having fun. Let somebody else get killed."
"But suppose everybody on our side felt that way?"
"Then I'd certainly be a damned fool to feel any other way, wouldn't I?"
-- Joseph Heller, Catch-22
[Last year's similarly-themed Memorial Day post]