Interesting topic title. I think that its fair to say that any performance medium has an aspect of "performance satisfaction" - the performer gets a kick out of doing their thing. Magic in particular takes this one step further, because you have the aspect of outwitting your audience. Whit Haydn made this point in a related discussion over at the cafe:
"Bobby Fischer said that the object of chess is "to crush the mind of your opponent."
Magic has a similar goal, but much harder than chess, the magician has to make his opponent enjoy the experience as well."
This really resonated with me, and I think is relevant to the topic at hand. Entertaining yourself is fundamental to any performer; the more the performer invests in the performance, the more the audience will invest too. If pulling off clever sleight of hand is what you enjoy, then that's what you should present. If you get a kick out of a clever self working trick, then THAT'S what you should present. Performance is highly empathetic.
Short answer - successful performers love what they do. Whatever it is that makes you smile, that's what you should perform. So if you learn a trick because YOU think its neat, then its up to you to convince your audience that it is. Don't feel that there are tricks "just for you" and tricks "just for performance" - that should only ever be an issue of practicality.