sammmo, can you really mean it when you say that because there is no evidence either way, therefore the probability is 50%?
There is no evidence either way about the existence of unicorns, Cinderella's fairy godmother, Aladdin's genie of the lamp, Hercules' labours and the existence of the god Munjem Malik. Do they all, therefore, have a 50% probability?
As I said earlier, it makes no sense to use a mathematical concept like probability to express a mere opinion about a superstion. They don't mix.