Usually these start off as side arguments, a "by the way" postscript after each side makes a point about what is wrong/right with The Simpsons, but eventually they grow and consume each post until there's one perfunctory sentence about the actual debate before an essay explaining point by point how much of a life they have, followed by a short story about how the other person came to the tragic day-to-day life they lead in their parents' basement. On YouTube and Twitter and other limited-space media, it's a little less eloquent -- usually just a random, disjointed jumble of cliched phrases, like "parents' basement," "Cheetos," "fat loser," "ur just jealous," "FEEL SO SORRY FOR U" and the like, that is mashed together to resemble a telegraphed message from a concussed toddler.
A tragic epidemic that underscores the need for child helmet legislation.
These arguments usually go on a good while, because people who have something better to do generally prove it by doing it, preventing them from participating in these arguments. Everyone remaining to participate in arguing about who doesn't have a life is afraid to stop the argument because stillness often forces contemplation and they might have to face the obvious truth that any observer could see in 30 seconds, and nobody likes looking into the abyss.