> if your users never complain about the performance This is a problem. Some user not even know what a fast app look like, neither have the hardware (hello ol

> if your users never complain about the performance This is a problem. Some user not even know what a fast app look like, neither have the hardware (hello old PC, hello cheap Android) or blame themselves for any problem or just assume "is supposed to be like this". Take for example the Android emulator (and in this case, using developers). In the moment I launch it, the FIRST TIME, i instantly look for a alternative (was impossible slow). However, how many developers stick to it, and have even less powerful machines than mine? Or using something else: How many people think that miss keys in the keyboard is his fault and not a problem with cheap rubber domes? And how many know exist mechanical or have used a old quality keyboard? Ignorance of the users is NOT their problem. Is OURS.