Dads joke) The same reason 10 pennies is worth more than 9.
Because 7 8 9.
10 lbs of pressure on the back of the head.
Because 7.. 8.. 9
All the extra cubholders.
Ten. One to change it and nine to downvote for no reason.
I dunno but it's probably the reason for their low birth rates.
They both shafted minors in the 1980's.