I read a book last night that compiled a lot of atheist to Catholic conversion stories. Some of the stories were very moving. Many of these people have happier lives after faith than before. The one story that I can relate to is that of the Raving Atheist.
He was first compassionate to pro-life issues and noticed many people in the atheist community lacking in morality. He noticed the love of Christians and people that faith brings. I definitely understand this. This is surely a result of belief at times, not always. I really do not want to change most of my morals and my pro-life stance as a nonbeliever.
But still, it seems fairly clear that much of the "reasons" these people chose to believe was based on anecdotal evidence. In almost every story there was a boyfriend, spouse or close friend who was a believer. I think there is a bit of coercion toward faith if it is a major thing separating a couple. For me personally, my husband still obviously believes very strongly. I know that I am staying more open to faith due to my relationship with him.
What if these people had not had a close relationship influenced by Catholicism, but rather Islam? If you check out the internet there are tons of conversion stories to Islam. These people have very similar reasons to believe.
At this point, it still seems very coincidental, as in my own life.