Oh, don't be so sure of that.
See Luk 16:19, There was a certain rich man, which was clothed in purple and fine linen, and fared sumptuously every day:
Luk 16:20 And there was a certain beggar named Lazarus, which was laid at his gate, full of sores,
Luk 16:21 And desiring to be fed with the crumbs which fell from the rich man's table: moreover the dogs came and licked his sores.
Luk 16:22 And it came to pass, that the beggar died, and was carried by the angels into Abraham's bosom: the rich man also died, and was buried;
Luk 16:23 And in hell he lift up his eyes, being in torments, and seeth Abraham afar off, and Lazarus in his bosom.
Luk 16:24 And he cried and said, Father Abraham, have mercy on me, and send Lazarus, that he may dip the tip of his finger in water, and cool my tongue; for I am tormented in this flame.
Luk 16:25 But Abraham said, Son, remember that thou in thy lifetime receivedst thy good things, and likewise Lazarus evil things: but now he is comforted, and thou art tormented.
Luk 16:26 And beside all this, between us and you there is a great gulf fixed: so that they which would pass from hence to you cannot; neither can they pass to us, that [would come] from thence.
Luk 16:27 Then he said, I pray thee therefore, father, that thou wouldest send him to my father's house:
Luk 16:28 For I have five brethren; that he may testify unto them, lest they also come into this place of torment.
Luk 16:29 Abraham saith unto him, They have Moses and the prophets; let them hear them.
Luk 16:30 And he said, Nay, father Abraham: but if one went unto them from the dead, they will repent.
Luk 16:31 And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, though one rose from the dead.
While body of the rich man and Lazarus were buried, their spirit/souls remained conscious in some dimension/place/new location. They could think, feel, see, understand. One part of this location was for the wicked waiting judgment. The other portion was for those individuals who would be bodily resurrected at some future time (wedding supper of the LAMB). There is a divide between the two places that can't be crossed. Once a person dies the opportunity to repent is past and your eternal destiny is fixed. The rich man was now concerned about his brothers still living on earth. Abraham said they should listen to Moses and the prophets (The Old Testament). The rich man seems to imply that his brothers were not concerned with Moses and the prophets. He suggests sending Lazarus back from the dead to shock his brothers into believing. However, Abraham understanding the wickedness of this family, knew that even the miracle of a bodily resurrection of Lazarus wouldn't make these brothers repent.
Remember, this was told by Jesus and Luke doesn't say this was told as a parable. I think JESUS was telling about an actual event (JESUS being both GOD and man would know). So, if a person has placed their faith in JESUS having died for their sins, as I have, then I KNOW what happens after I die and where I spend eternity.
Thanks for your time.
Face it. You don't really know.