The entire point of being a Warlock is that you have an intense will of your own. Otherwise you’d be some nameless npc that got eaten by fel hounds or drained of life by succubi or just imploded because they thought they could absorb a whole ton of power and handle it or even worse, convinced to join the Legion and then you would of been demon #1942895 in Antorus when we killed everything.
Just cause you wield the forces of evil doesn’t MAKE you evil. “You are bad guy, but this does not mean you are bad guy!”