Joshua Jay did a study and found that card tricks are the least memorable of all magic. That's not to say least enjoyable though. They're sort of the equivalent of a summer action movie you watch once, have a good time, and then forget about. However, if you include something else in the trick (a lemon, the ceiling, the omni deck), the tricks become much more memorable.Btw, just asking, isn't it just kinda annoying when you do a card effect, put all so much emotion and drama in it that Netflix would be jealous AND the spectators react AWESOMELY and behave as if they have found the Holy Grail...and then when someone asks them what happened, they look at their friend and say,"Oh, [insert your name] just showed me a card trick!"
Me (mentally): After all this time?
Spectator (mentally): Always.
I think it's annoying when I'm trying to do a "magician in trouble" and purposely show the wrong card and they're like "yup that was it". Sometimes it's just the other card of the same color (ex: the other red 7) but other times I've had their friends correct them and it was a completely different card. Like I'll show a 6 of clubs and they're like "that was it!" and then their friend goes "No it was a 3 of hearts".
Edit: I sometimes get reactions just from the way I spread the cards. I don't do a lepaul or anything fancy. They're just like "oooh that was smooth".