Q: why would you prefer garageband over logic?
A: garageband is crippled on purpose (to make you buy logic, i guess?) there are less shortcut keys, on purpose. this is torture. logic has as many shortcut keys as you want, which is a dream. logic is a dream, in many ways. However, one very important reason why garageband (or any simple program) would be an advantage, is there are less choices, so life is simpler. this phenomenon happens in any field. simpler tools can be limiting but also liberating. another reason you might prefer garage band over logic would be if you can't afford logic. which was the only reason i have ever used it