The Importance of Catholic Teaching

In Catholic teaching, non-Christians can be saved. When I go to Catholic Mass as a Protestant, I can't partake in the Eucharist. Why is that? If non-Catholics are me saying. I respect your lack of belief in it; so I'm not going to put you on the spot and say the body of Christ enforces you to say amen. So no, I don't read it at all as some kind of exclusive move. It's Catholics respecting the non-belief of non-Cath Democrats.