No.
I play a lot of single player computer RPG games. So I have to make decisions, some of them good, some of them bad, some of them which will hurt characters in the game.
To reiterate, these are single player games, so no other real people in them, the only people my decisions are going to affect are fictional characters.
And I still can't bring myself to make the "bad" decision, the one that will kill a character I care about at benefit to myself, or the one where I have to commit genocide to save a character I care about.
I go into a game thinking "This time I'll try an evil play through", and every time the moment the opportunity arises I still end up picking the good option.
If I can't even pick the immoral choice in a game, where the stakes are entirely fictional, there's no chance I'll be able to do it in real life, even if no one's watching.