“Few people have the type of experience you describe so it cannot be depended on as an antidote to people leaving formal religion.. “
You seem to think what people do is the primary reason for formal religion’s existence, do you?
It is God’s immanent/omnipresence makes people to seek God.  Catholic Church is just one of the religions who supposedly help people seek God.
“Wherever man wakes to consciousness and knows himself in his basic intuitive consciousness as open to the transcendent mystery of existence, the power of the Spirit is in him, drawing him to eternal life.”
The Marriage of East and West
 I would recommend people to stay away from the religion that allow clergies to rape children.  People could give up seeking God all together.  It is far more important for people to desire to seek and have loving relationship with living God whether they become a Catholic or not.