Well, I have just skim read this thread, and while I don't have any religious views to speak of (had a bad religious upbringing, and it tends to put you off such things), but I will say this: If you feel comfortable doing what you feel your god is capable of forgiving you for then you should do it
I do know that the Ishmaeli religion requires it's devotees to gamble as part of the requirements to worship...
Heid
xx