Here's why religion causes so many problems. Mister Christian says that society needs the Bible for a moral code. Mister Jew says we need the Torah. Mister Muslim says we need the Qur'an. Mister Hindu says we need the Vedas. Et cetera. And, even though all those scriptures espouse pretty much the very same moral code - i.e. don't kill people, don't steal their stuff, and generally just be nice to each other - we still end up killing each other, because we can't agree on which book is the Right One. Bottom line? No, we don't need The Bible to tell us how to live - just ask a Hindu. They get along just fine without The Bible.
And my personal opinion? If you need a book or a person to tell you what's right and wrong, then there's somethiong seriously wrong with you.