A. For different lane conditions
B. For collection
C. My parents or whoever works as bowling equipment seller or something. So I can get cheap or free balls.
D. Changing my balls because I'm now a better player. So, I still keeping my old balls.
E. My pals bought for me as a gift or something.
F. For showing off
G. For playing different bowling style. When I feel like to.
H. I only got 1 bowling ball.
I only got 1 bowling ball.