Islam owns atheism with a single verse

[Angrboda]

Yes, that you assert this doesn't make it the case.  

Again, I never claimed that it is the case. Once again, zero understanding of logical implicaton.

P => Q being true doesn't entail that P is true.

"traditionally conceived God => afterlife" being true doesn't entail that traditionally conceived God is real.

God traditionally can't do anything that controverts his nature.  His nature is necessarily mysterious to us, so you can't say what necessarily is or isn't contrary to his nature.  Thank you for playing.

God traditionally is benevolent, and so benevolence is part of his nature. If such a being exists, an afterlife exists. It's really not difficult, nor does it imply that your worldview is false, don't overthink.

I don't agree that God as traditionally conceived is completely mysterious, e.g. that we know nothing about Him, because then we wouldn't know enough to consider Him worship-worthy.

Things that simpletons believe are true that aren't are never very difficult for them. There have been plenty who have conceived of God as simply annihilating us upon death, which they see as the most benevolent act. It sounds like you're projecting, ala "If I were a benevolent God then I would do X" -- but you aren't a benevolent god and so your speculation is uninformative. And I didn't say that God's nature was completely mysterious. Learn to read.