Top Ten reasons being a multiple rocks:
We are never truly alone.
Unpleasant tasks get done just fine without my presence.
My forty alters have 1/40th the carbon footprint of your forty singlulars.
If we don't remember, it didn't happen.
We are at the forefront of human evolution.
Multi-tasking? Been there, done that (have the t-shirt).
We do use our head for something besides a hat rack.
Technically eligable for group discounts at fine outlets everywhere.
Gay, Les, Trans, Bi, Straight, group, mono, male, female, gender free, beastial, inside, outside, upside down...who cares? We've got an alt for that.
In the upcoming zombie apocolypse, the undead can't decide who's brain to eat first and wander away in confusion.