A lot of table game players like Blackjack as it gives them a feeling of control. They get to decided if they hit, stand, double, split, surrender, take insurance. It has options that can effect the current hand. Yes, in the long run, they will lose unless they are counting, but they play in the short term of just one hand at a time. It is one of the very few games that offers that many options that can change the outcome of the hand.