I Thoroughly enjoyed Don's Book/3rd Edition...

Question :
IF the Player Hit Bust Rate on 12 = 31% and 13 = 39%,
and the Dealer Bust Rate on 4, 5, and 6 = 40% to 43%, WHY don't we Hit ALL 12's and 13's???...

FWIW : I always HIT 12 (with Dealer 2,3,4,7,8,9,10,A), and 13 (with Dealer 2,3,7,8,9,10,A)...Thanx A Million!!!