[Q_and_A]

As a player, you want the highest ratio of blackjacks. This is true even though the dealer's chances for blackjack are the same as the player's chances. The dealer can only win or tie. The player can either tie or be paid MORE than even money (unless the player accepts even money, just like buying insurance).

With the higher blackjack ratio for single deck, the typical casino only offers 6/5 on a singledeck blackjack rather than the normal 1.5/1 payoff.