I have a lengthy, meandering post on the subject - I think I will trash it.
Central point: If you think there's a 1% chance Christianity is true, then Pascal's Wager makes sense. Technically, because Pascal was a mathematician and liked to think in terms of infinities, it makes sense anyway. But our brains really don't work that way. "Big number" is a big number, no more, and infinity is just a big number. So infinite bliss and infinite torment, to our reptilian brains that we really decide with, boil down to "a whole lot. At least 87."
But I don't see how the wager gets us from 0% to 1%. If you really think there is zero chance it's true, Pascal can't help you. But it's a slam dunk as a tie-breaker, if you are actually 50-50 whether to believe.
I think there is 0% chance that reincarnation in the Hindu sense, of coming back as animals and other people over and over until we get it right, is true. But we are to be given new bodies on a remade earth in the Christian new creation, and at least one 1st C group of believers believed in reincarnation, so the idea that we might come back as a something, some unimaginable helper in some other universe, I think rates a 1% chance. If there were some precautionary action I should take for that, some other version of Pascal's Wager, I'd consider it.
Epicurians and Confucians, in different ways, believed that getting along in a peaceful society was a great good and pleasure, and so recommended worshiping the local gods, with neither seeming to ask whether you believed in them. That is Pascal writ small, a minor inconvenience for a great gain. The Victorians in the C of E, and the Scandinavian Lutherans until about 50 years ago, seemed to echo this. Believing was less important than the positive benefits of all journeying together and being a community.
Modern Christians, especially evangelicals, don't think much of that sort of belief. They want to see BELIEF, not some Potemkin village of belief. I sympathise, but they are simply wrong. On a purely worldly level, no one who relies on the Four Spiritual Laws and coming forward on the sawdust trail in a moment of excitement is in much of a position to criticise others about getting in on a technicality. But even on a deeper level, none of us comes into belief for a good reason of our own. We are called, not because of our merit but because of His love. So a Pascal's Wager convert should be welcomed. Heck, she should even be given a whack at teaching adult Sunday School. Once, anyway.
Update: See James's comment.