Well, let's distinguish religion from spirituality. I am Catholic, so religion for me is a way of having discipline and collective worship with persons who share the same mystery.
The fashion just now is a Roman Catholic frame of mind with an Agnostic conscience: you get the mediaeval picturesqueness of the one with the modern conveniences of the other.
Wicked sons do not have the Holy Ghost in the same way as do beloved sons, and yet they do have Baptism. So, too, heretics do not have the Church as Catholics have, even though they have Baptism.
Everywhere in the world there are ignorance and prejudice, but the greatest complex of these, with the most extensive prestige and the most intimate entanglement with traditional institutions, is the Roman Catholic Church.