If the universe is an ever repeating pattern and time is meaningless in death, Karp will soon * endoftime^∞ buy that mansion again and again and again. Perhaps with in between variants where you buy that mansion or the mansion turns out to be a mountain goat.

how are you so sure the afterlife does not exist

Science, math, Darwin, etc etc.

None of which are incompatible with a soul or afterlife.

And how exactly did you figure this out?