Romeos punishment fair or unfair?

I think that Romeos punishment of being banished is completely fair. In fact he should have died. An eye for an eye is how I see it, or in this case one life for another life. Romeo should be thankful that he is still alive, and not joining Tybalt in the ground. The prince was too easy on him. Romeo still gets to enjoy everything in life just somewhere else. the only thing that he is missing out on is family, which can just move with him. Romeo killed another human being, so Romeo should die too.