I'd say its too individual to answer. Being born into religion is very neat given the upbringing and (apologies for the negative connotations but its the best word I can think of) indoctrination of growing up with it. I've actually been trying to get into religion for a little while now. Couldn't tell you why, but there you are. But of all the ones I've researched they do all hit a snag where I go "ehhhh that's kinda moved into mythology" or its required me to acknowledge something I can't marry with my brain logic. Of what I've read certain sects of buddhism are probably the closest to I've come to finding a religion that didn't require such leaps or wilful ignorance and that I could get along with it, but even then its not completely clean. I imagine it is possible to alter the teachings to adapt to personal preference, like the difference between Christians who take the bible literally and those who take it as allegorical. But even then there is a limit to how much you can fiddle before I'd say you're not following a religion but simply liking some of its parts.