There is a difference been emotions and emotionalism. Emotionalism at Mass is a bad thing but emotions are fine. The original ordering of the faculties before the Fall was such that emotion always followed from reason. But since the Fall, sometimes our emotions get the better of us. We get angry or lustful or whatever and we just can't think straight and do or say stupid things. But emotions which follow from reason are fine and good, we are not Stoics or Puritans.
I know there are people who think that men should never shed a tear. But seriously, if your wife or your mother or your child dies and you aren't crying, there's something wrong with you. And what man didn't cry when they shot Old Yeller? Emotions at big events are normal, if your daughter is getting married, feel free to cry a little. And there is nothing bigger than the Holy Sacrifice of the Mass, this is the reason the universe was created, this is the reason we exist. We talk about the exquisite sufferings of Our Lady kneeling at the foot of the Cross, but certainly St. John wasn't detached either. This is Mass, it's Our Lord reigning from the wood of Calvary, it's the marriage between heaven and earth -- Christ and His Church. It's a big thing, so there's nothing wrong with getting emotional.
In contrast is emotionalism, which reduces the Mass to sentimentality, such as through inappropriate music, even Evangelical "praise and worship" music in some places (and even the Evangelicals complain about these sappy "Jesus-is-my-boyfriend" songs). In this, emotion doesn't follow from reason but reason is made subject to emotion. Confusing spirituality with emotionalism is a common mistake, and not only among Charismatic Protestants and Catholics but it has crept into more mainline parishes as well.
