DuracellEnergizer said:
I'd be sure there was no purpose or no meaning to existence, rather than merely feeling such.
I guess at the very least the purpose of life would be to continue our species (the same purpose for any living thing on this earth). I'm not saying there's not more to life to than that, that would be boring as hell, just saying that coming up with supernatural purpose, god(s), afterlife, etc is not necessary.