I was raised Lutheran but felt agnostic (insufficient data) for many years. I started to read the Bible and found that it slowly made more sense, especially when you took it out of denominational packaging.
I looked at reincarnation religions, but my main objection was that they seemed a little logically flawed. The system of reincarnation (things getting better) was supposed to work in conjunction with a system (karma) that kept everything the same.
I was in Japan years ago on business and asked a woman there what thoughts she had about religion. She said that she had felt bad a couple of times in her life, but never bad enough to consider religion. This was the first time I had really considered religion as therapeutic.
I then considered various reasons people might have for adherence to a religion;
1. Palliative or soporific
2. Connect with previous generations
3. Obtain a better future condition
4. Gain wisdom or understanding
5. Obtain a better present condition
6. Assuage guilt
7. Justify or endorse some questionable action
8. Gain social acceptance
9. Gain parental approval
10. Therapeutic or remedial
11. Cultural or ethnic identity
There are a variety of reasons people can have for their religious views. For me, I was interested in truth. This has led me to consider Christianity of the Bible instead of Christianity of churches. I do not want to suggest that anyone give up their religion, just for me the search for truth has led me away from religion.
Eric Hoffer once said that every great movement eventually becomes a business and then a racket. I think every religion has suffered from the fact that the concentration of popular interest in something usually leads to the centralization of money and influence. This often attracts the baser sort of person who seeks to work his way into a position of control and advantage.
If anyone is interested in this perspective, feel free to PM me.