Well, you should not become a Christian for the sake of becoming one, but because you want to be with God.
God loves you, He wants you to follow Him, He wants you to let Him into your life. If you accept the sarifice Jesus made (believe He died and rose, for your sins, and ask Him into your life), you are by definition a Christian. But that is not what is important, the important part is this:
When you believe in Jesus, and acept him as Lord, you are heir of the Kingdom of God!
When you ask forgiveness for your sins they are not only taken away, but forgotten.
You will be "a new creature". Imagine, all of that just for making the choise of being a child of God
- Now I think that is a good deal, eh?