In an infinity of universes there would never be any need of anything like an afterlife. It would be superfluous. There would be duplication, parallelism, fractal self-similarity, and even simply prototypical or archetypical continuance (a constant sense and realization of consciousness and de ja vu) all through infinity. In other words, you may die an infinite number of deaths in infinitely many worlds and universes and times, but the infinite will never gain nor lose you, no matter how many crossroads of decision existing, no matter how many and varying the paths taken, no matter how good or bad the "information." You live in the earliest times of universes' "life zone" and you live in the latest times of that "life zone" and, regarding the "infinity", you live -- and die -- at all times there.
Think about how many decision points have existed in your life, and how many different paths you might have taken (equating to how many different spaces (places), how many different times, you might have been in, if you had made different decisions along many, many, different lines). In an infinity of universes, you, like a proverbial particle of QM, spread yourself all over your own [possible] territories (possible universes) as well, according to infinitely varying decisions made: In the infinity of universes, that is, but never in any individual finite universe (each being strickly a one track affair).