When you get to a point where the question of whether somebody starts believing in God or not has very little to do with critical thinking and a lot to do with emotions I become uncomfortable. It's like the people are being taken advantage of.
When somebody starts believing because he is lonely, it feels like religion is a virus, taking advantage of a weakness in somebody's critical thinking systems in order to infect their brain.
We are not completely rational beings, we don't always need to focus on evidence and occam's razor and strip all spirituality from our life. It's fine to be religious. That is a choice everyone makes for themselves. I believe that, and it still makes me uncomfortable when religion seeks out to lonely people. It feels a little like looking for a soft mark.