Who decided, and basing on what concepts, that `switch` construction (in many languages) has to be like it is? Why do we have to use `break` in each statement? Why do we have to write something like this:

 switch(a)
 {
 case 1:
 result = 'one';
 break;
 case 2:
 result = 'two';
 break;
 default:
 result = 'not determined';
 break;
 }

(I've noticed this construction in PHP and JS, but there are probably many other languages that use it)

If `switch` is an alternative of `if`, why we can't use the same construction for `switch`, as for `if`? I.e.:

 switch(a)
 {
 case 1:
 {
 result = 'one';
 }
 case 2:
 {
 result = 'two';
 }
 default:
 {
 result = 'not determined';
 }
 }

It is said, that `break` prevents the execution of the block following the current one. But, does someone really run into the situation, where there was any need for execution of the current block and following ones? I didn't. For me, `break` is always there. In every block. In every code.