You say some arrogant things, my friend, but this surpasses them all. How can you possibly know that for 100%? You don't; nobody does. It's ridiculous to say you do. You may BELIEVE there is no afterlife, but that is not the same as saying that you categorically KNOW there is none. For that you need to have solid, empirical, undeniable proof, and there is no such thing.
Same goes for you. There is nothing you can say DEFINITELY about the afterlife. For all you know, we could be living in the Matrix, or you could die and say "Is this the afterlife?" to which crowds of Higher Beings will chorus "Afterlife? You've been living it, mate!"
