Incidentally, from my Buddhist side I have often been encouraged (mainly by Mahayana teachers) to reflect on the merits of many of our most holy people who took vows to be reborn in hell.
Sure, one can and probably should say that their understanding of hell is very much at odds with that of a Christian or Muslim. And that is perhaps the point.
What use, if any, there is to the idea of hell beyond its effect on the motivations of people?
To the extent that it is useful as a motivator, how valid it is to use it as a reason to "choose belief in God"? Does that even make logical sense, let alone moral sense?
Or instead, what moral conclusions can people take from the exercise of assuming that there is a hell and some people may end up there? Which moral duties may come from such a scenario, and how can they be fulfilled?