Why Romeo should be banished

Romeo's punishment is in every way fair because he had a reason for killing Tybalt, Mercutio was killed in vein for no reason but for Romeo trying to bring peace between the two, so Romeo was angry to the point where he could kill someone. Romeo was just trying to be happy with Juliet but if they can't have that Romeo that is "in love" and would die for that woman. Romeo is love struck but it truly isn't true and he is going to be sent away, they are going to be foolish and try and kill themselves. The punishment Romeo received was truly justified, he deserved to be banished and to be gotten rid of for killing a man.