Is my wife treating me badly?

She is treating you like sh*t. If this started out of nowhere and is uncharacteristic of her, it sounds like something is seriously wrong with her. She could be bitter about something you did or didn't do a long time ago, she could have a guilty conscience about something is now lashing out about it, it could be any number of things. But it is certain that something is NOT right with her or this situation. Don't let her step all over you. Marriage, any relationship, is a team, a partnership, and she is acting like a dictator by the sounds of it. Good luck.