After preaching for thirty years as a layman, directing choirs for longer than that, and teaching priests how to do the liturgy, when a dissident bishop who had been a fan of mine for many years offered me ordination, I jumped at the chance. I don't believe everyone has to be Catholic. God and His Church are bigger than that. But I have to be Catholic. It's who I am.
Many people do that listening to a good sermon in a Protestant church.
I do it receiving Communion. In the final analysis, being a Catholic is not about being a member of an institution. It is about being a member of the Body of Christ. It is not about what you believe. It is about whom you trust.