Well, my best guess would be that the ones who frown upon it are the ones who don't share in your beliefs. Being a Christian myself, I would think that the church would offer you a place to go for support and love and community, things in my opinion (and I'm no doctor) that are essential to recovery, and would be a very important part of your therapy. To be honest, I can't see why anyone would think that someone practicing any particular faith would not be important to healing.

Ry