My wife and I like to joke that we became Orthodox because we wanted to belong to a church where we were the "liberals." But for us, the core doctrines of the faith, such as the Virgin Birth or divinity of Christ, are not up for discussion.
Beyond the core doctrines, there is no definitive teaching on many issues of Christian life. When it comes to a disputed issue, you can find an Orthodox saint, monk, theologian, or priest to back up almost any argument. How do you know what's right?