I think most people don't feel they know for sure, but I think most hope there is something
If you really want to know all that you have to do is set all rational thoughts aside and 'just believe' that a three in one godman diddled a virgin to father himself so that he could become fully human without a human father and then you too will fall from the sky like a stone into the world of the dead and gibber incoherently about how much Jesus loves you, a hapless sinner, while you bake cakes, play bingo, hold raffles, pray for forgiveness, and squawk about the end of the world till kingdom come.
Dead people are everywhere.
Its safer if you just ask them what its like.