People who know how to play an instrument absolutely *do not* take it for granted. They too started out not knowing how to play, but spend years and year honing thier crafts and talents. This whole "instant music" thing is doing nothing but diluting the cesspool of garbage and lowers peoples expectations even further.
Nothing worthwhile in life comes easy. Want to play an instrument? Great. But it requires effort and like all art forms isnt as easy as simply pressing a few buttons, unless you want generic soulless rubbish, which this Garageband will produce 98% of the time. That's fine if a person simply wants to have fun, but I have a bad feeling that the crap made with this sort of stuff, combined with a marketable face will find itself in the mainstream from time to time. The more of ths crap there is, the more people accept it and standards lower. Apple are slowly but surely making more of a whore of the music industry as time goes by.