we 'believe' in our own religion, why? Maybe because we cannot prove it true or false. On the other hand, we don't need to believe a fact, because it doesn't matter whether we believe it or not- it's a fact!
it doesn't matter whether we believe in a certain religion or not, it doesn't matter if we are atheist or theist- We all will get to know our answer through the ultimate process of human life- death... all the people in the above list got their answers... and someday we will get ours, too . . .