Again:
This particular wager makes a moral evaluation. In other words, it recognizes the good at hand, which is eternal and immeasurable beatitude. Recognizing the good at hand, we can make a moral evaluation pursuant to that, or a “wager”, as the OP has cast it with Pascal.
Ok, “wager” then. What is a wager?
Any gambler with a modicum of expertise weighs the opportunities with the goal of profiting by the wager. No sane person gambles with the goal of losing. The point of plunging into risk (or wagering) is to profit.
Put into Christian terms, the goal of moral evaluation is beatitude, or fulfillment with Christ. This beatitude is beyond measure, so the “stakes” are immeasurably high.
In light of beatitude, anything and everything else is void, or completely lacking. That is why this void can be expressed as “eternal damnation”. **Only in light of the magnitude of the good does the loss have meaning. **
You can also say that loss is just nothing and you would be right, but **you might not realize the depth of that nothingness without seeing the beatific vision. **
Is that making sense?