By Vanessa Rasanen Months ago I posted a meme on my Facebook page pointing out how parents view non parents who claim to be exhausted — basically, with hysterical laughter. It earned me some pretty heated comments, as well as some unfollows. I probably should have expected such a reaction, given our propensity these days to take everything as a personal affront or insult. No matter how many times I tried to explain the point of the meme — not that non parents aren’t ever tired, but just that there is an extreme level of exhaustion inherent in parenting that one can’t fathom until one experiences it — I still…