Of course, there are psychological aspects, you can unify a community or concentrate on your life goals. I feel like Christians try to do something like that when they say that prayer should be a dialog.
The thing is, those things can be obtained by many non-religion connected practics and you can objectively examine what is more effective in which aspect.
I'd like to focus on the belief (not really widespread, I think) that everything in the universe is scientifically explainable AND you should never rely onto a "miracle" - you shouldn't count with the fact that God can affect your life.
In other words, I'm trying to understand the quote:
“Act as if everything depended on you; trust as if everything depended on God.” ― Ignatius of Loyola
-especially the second part, which is sometimes formulated as "pray as if everything..."