And I will bet this "meaning of life," which some do look for, almost always embraces the validation of an afterlife: the great beyond for which we are suppose to spend our time on Earth preparing for. It's all part of the, "There's got to be more than THIS" anxiety. And if it occurs to one that there isn't anything more than THIS, then the fear of utter annihilation easily sets in. So it comes down to a, "Please, please convince me there's more to my existence than just THIS. P L E A S E." Not for everyone of course, but it looms large enough to keep the believer in line. A peace that thankfully requires no understanding, just faith. Tell me what I need to hear and you'll have ear and my fidelity forever.
This is why ALL religions work.