RE: Does it pay to believe in God? Math point of view on salvation.
The idea of Pascal's wager is quite old - as are its objections. One of the most common ones is about the many Gods:
Pascal is assuming, reason can't really decide anything here - given this, other theistic concepts might apply as well. The probability, there will not be ne Christian but the old Greek gods, is quite likely. Cargile stated it in 1966 as follows:
for each real number x, consider the God who prefers contemplating x more than any other activity. It seems, then, that such ‘alternative gods’ are a dime a dozen—or ℵ1, for that matter.
Pascal's wager is not a logical valid way for deciding to believe in any kind of deity.