To me, the adoption of a religion is an expression of a wish to stop thinking and just accept something. There is nothing accomplished by any religion that can't be done alone. Many somehow feel a validation by joining a group of people who seem the think alike, to the point of being indoctrinated and brainwashed.
This is not a statement of spiritual paths, but of religion only, which I see as a true evil. In saying that, I try not to be openly critical of anyone's path, but prefer to attend to mine, which is really the only one that is relevant to me, as a human being and individual entity.
I was visited by some Sunday proselytizers who clearly wanted to engage me at an intellectual level. They asked me, "What do you think is the single greatest cause of strife and war in the world?"
When I replied, "Monotheism, since it's been the driving force of conflict since time began...".
I find it rather ironic that both Islam and Orthodox Christianity, theoretically Abrahamic religions, were both spread by conquest and violence, much like their Pagan predecessors. While the Ancient Hebrew writings speak of much violence and warfare, it was not for religious conversion, but to gain a homeland promised to them by their deity. Jews are also non-proselytic. You must ask to become a Jew, and ask more than once. Nobody is ever invited, or recruited.
Islam and Orthodox Christianity are also both religions; Judaism is an ethnicity, not a religion.