Evil is hard to pull off well, very few games manage to make evil playthroughs actually interesting. A lot of the time it just means more slaughter, which in turn means less content since you kill off so many potential quest givers and followers. Plus, a lot of “evil answers” in dialogue often just means being an asshole to people, which usually closes potential content avenues. And while that is sort of realistic (people don’t want to work with you if you’re an ass to them) it’s not really that satisfying.