Not just advantage
Jmcaok should understand that a major and often overlooked advantage of ES is that it reduces variance considerably. You can either keep your bet size the same and benefit from reduced fluctuations, or bet slightly more aggressively for the same risk, and make more money. The extra EV, significant in itself, doesn't tell the whole story.
On an psychological level, playing blackjack ES feels closer to a coin-toss game than regular blackjack.
Rather the bet is held in a type of �escrow�, and not returned to the player until it is determined that the dealer does not BJ.
I encountered this one time. I remarked it was similar to the en prison system sometimes used at roulette. The dealer became rather confused and began paying back half my wager every time she had BJ, I think confusing what she was meant to be doing with the roulette procedures at the casino.