I'd suggest the opposite.
A rational person need not look far into any religion to make that decision.
If I suggested to you that I believed in the Flying Spaghetti Monster based on a book I read along with some online discussion with other believers then how much delving would you need to...
Is funny how sightings of UFO,s, Nessie, Yowies, Bigfoot etc etc have all dropped markedly since most of us started carrying a camera in our phone 24/7.