Well one good reason is less wear and tear on that
$200 ball. My game is like 60% spares. I know for you
guys its maybe only 2 spares a game. Also spare ball is
great for practice when its drilled with finger tips for
the same feel. Spare ball also teaches you how to throw
straight end over end roll. Sometimes plastic is best choice
for the conditions, then you can hook it.
Its true, I feel like I play two separate games, the hook game
for strikes with all its complex adjustments, and the straight
ball spare game. GS