Bringing up an app isn't the use case. Bringing up an app dozens, or hundreds, of times is. Think of it like this. If you need to build one moderately simple w

Bringing up an app isn't the use case. Bringing up an app dozens, or hundreds, of times is. Think of it like this. If you need to build one moderately simple widget, is it faster to build it by hand, or to build an entire factory to make it? Obviously, building it by hand. Now, how about if you need to build 100, or 100,000? How about if they all need to be exactly the same? Factories start to make sense at a certain point.