Many reasons. One being that the modern Wiccans are a whole lot more fun to be with when they dance under the moon and believe that the goddess loves everybody.<quoted text> Church going is down in all faiths, you know why?
People don't want to believe they will spend eternity in hell. So, the answer to their prayers is that they join a religion that doesn't believe in the existence of hells.
See how easy it is to solve that problem of hellfire and damnation? Just do away with it in your brain, and the fear-filled illusion is sure to disappear.