Is an enemy combatant with a weapon a bad guy? How about an unarmed enemy combatant? How about an enemy combatant with just a knife, or a rudimentary club? How about an armed civilian who might be an enemy combatant?
Is a bank robber a bad guy? If so, do they deserve to die? How about a white-collar fraudster? How about someone running from the police? How about a mentally ill person running from the police?
This stuff is never clear cut. It's why we have courts and military tribunals. If you can't think beyond 'good guys' and 'bad guys', I don't respect your opinion.