> Whatever the “root” of your code is should have a generic catch all where you do “something”
If your only goal is to avoid crashing the app then you can catch the base Exception class at the root of you code and go home. But consider the scenario that you're writing a very important method, where the functionality of your method is very important. If your method does not do its job, the rocket may crash or the patient may die. In this case you want to know what recoverable errors are possible in the functions that your method calls, correct? Wouldn't be it nice to get a guaranteed-by-compiler list of possible, recoverable, errors?
If your only goal is to avoid crashing the app then you can catch the base Exception class at the root of you code and go home. But consider the scenario that you're writing a very important method, where the functionality of your method is very important. If your method does not do its job, the rocket may crash or the patient may die. In this case you want to know what recoverable errors are possible in the functions that your method calls, correct? Wouldn't be it nice to get a guaranteed-by-compiler list of possible, recoverable, errors?