It seems that single-deck blackjack is beginning to gain popularity down Las Vegas strip again. They advertise it as “the good old days are back”, and things of the sort in order to call players’ attention, but in fact, it is nothing but a trick.
This type of blackjack game pays less than the rest, 6 to 5 instead of 3 to 2, so if you gamble $10 dollars and have a blackjack, you get only $12 rather than the usual winning of $15. Game after game, this 3-dollar difference may turn into a great loss of money, no matter how lucky the player is.
The fact of playing with just one deck does not make up for the disadvantages, furthermore, it makes the game much worse. So the best advise would be never to double or take insurance on this kind of game, or even better, completely avoid it.