I can share with you the reason I was prompted to buy them for a time.
Mrs. Davooda had previously never been known to actually finish a Coke - and was prone to leave them sitting where she has taken the last sip. We have a couple young boys and I hoped to prevent the summertime "wasp in the Coke can" sting that I have witnessed on several occasions when children see a half-empty sodie can and decide to gulp it down while Mom and Dad aren't watching.
So, I started stocking the midget Cokes at home.
Mrs. Davooda was off-put at first (BIG euphemism here) but I convinced her of the logic. She has since broken the habit and we're back to full-size Coke cans. Mrs. Davooda still doesn't finish them, mind you, but now she dumps them out before they go into the recycling bin
Life is a garden, Dude - DIG IT!
-- anonymous Colorado snowboarder whizzing past me March 2010