Of course I do, it's the part of you that wants to just say 'not my problem' when you see an injustice, it's the bit of you that doesn't care about a friend/family members ideology because of 'keeping the peace', it's the bit of you that wants to buy some new trinket instead of donating to a worthy cause, it's the part of you that really wants to have more than someone else because 'you deserve it', it's that little voice inside your head that wants to say '**** off' to every other person you see.
The devil is inside us all, and fighting against those instincts is what makes us decent people and members of a society.
As for the whole religious concept of an all-encompassing, malific force? Lol, nope, that's a fairy tale to make you feel better about how part of your very nature is in fact the most evil thing.