What's "Joyful" about the Presentation in the Temple in the Holy Rosary. To me, hearing the news about the baby and hearing that a sword will pierce her own heart would be devastating to our Mother Mary. Do you know how it ended up being a Joyful mystery instead of a Sorrowful mystery?
Because it was a happy occasion in the first place. And there is only the one bummer piece of prophesy, and even that one follows from the joy of what Christ brings to the world. All of which is covered by Simeon, who is thrilled, by the way, to get to hold the child in the first place.
At this point, there is no such thing as Baptism. This particular ritual, offering the baby to the service of God in the Temple, is the Jewish version of this happy day. Imagine, then, you take your baby to the Baptism and some old man jumps out of nowhere to wax on about what a very important baby this is. The Savior of the World, this one, and the old man is oh so happy to be able to witness this person's presence in the the world. The old man prattles on about the immeasurable change this will create. And then he mentions that this will be particularly hard on you, Mom. But your hardships will also help humanity for the rest of time.
And we're happy that Mary and Joseph led by example in following the rules. They didn't have to do that. Jesus is the New Testament with God, after all. They present Jesus, the Lord, to the Lord. We're happy about that. It shows us that they followed God's laws. They could have sat home, thinking, "This IS the Lord. He'll have His own book soon enough."
Here is a lovely article about how nice it all really is. That should help.
And note that there are a bizzlion depictions of this event in art. And everyone always looks happy.
You can be happy, too.