The fundies say it is - pretty much universally in the Christian faith.
Hell, Christianity is only as popular as it is because it encompasses a bunch of other religions. Catholic, Protestant, Seventh Day Advents, Methodists, Baptists, Unitarian, etc... Those are all Christian. To be a Christian faith, the only thing that's required is to believe that Jesus Christ was the son of God.
Split those into how they practice and the rest of their beliefs, and they're no longer dominant. Same with Islam, where there are three or four different sects.
I'm pretty sure if you did all that, Hinduism would end up the most popular religion. I don't think they have a heaven or hell, at least not in the sense Christians do. I'm not really sure. I just know some of the many gods they worship and that's about the extent of my knowledge.
I don't subscribe to any known religion, I made up my own
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