If you live on Planet Earth - you're already a member of The Cult of the Holey Asteroid! In other words, membership in The Cult of the Holey Asteroid is obligatory.
Don't you mean "Holy Asteroid?"
No.
Do you serve your memers Kool-Aid (AKA: Is The Cult of the Holey Asteroid a suicide cult?)
This is a complicated question but suffice it to say that lethally spiked beverages seem pointless in light of the teachings of The Cult of the Holey Asteroid.