Daily, I have Protestants challenging me about my Catholic faith showing me texts of scripture that supposedly prove that Catholicism isn't Biblical.
Here is the Christian worldview of a Catholic:
Christ started His New Covenant family at Pentecost with the Catholic Church. When you are baptized into that church, you enter a family covenant with God. Christ becomes your brother, God becomes your father. And all those who have been baptized are your brothers and sisters in Christ.
You may not get all the family rules right or even understand the family rules. But that doesn't make you less of a family member. Are your biological brothers and sisters perfect? Of course not. It is not logical to demand that they be perfect.
See a Protestant is looking for a church with perfect theology--or one that best fits the person's interpretation of theology. They believe the church they deem has the scriptural truth is the one God wants them to be a part of.
Catholics believe Christ started the Catholic Church and is revealing Truth to them through the Holy Spirit and the Word of God. Even if they don't get theology perfect, that doesn't mean the church is wrong anymore than if your dad were to give you wrong directions or were to blame you for something you didn't do makes him less your father. If we are family, we are family through Christ, not perfect theology. And not perfect behavior from the kids.
Catholics are family. We are struggling to understand truth together. If some of the children don't quite understand Catholic teachings, that doesn't make the family break up.
So it is really useless to say, "Your priests are bad." Because if someone said to you, "Your dad is bad." That just makes you ashamed, it doesn't make him less your dad.
If someone said to you, "Your family is stupid for believing God wants babies baptized." Well, even if that were totally true, even if Catholics were
absolutely wrong about some teachings, that still would not take away the fact their Father is God and that Christ died for their sins.
Theology isn't the measurement of whether a church is the right church. We look to the church Christ started and understand it is a group of people struggling to live up to the name of Christ. That's how we look at it. We look to Who is the Truth, not what is the truth.