try - catch is not so clear to me...

hi to all! actually, the statement in the Subject line is not 100% correct. I understand the purpose and how it works (at least I think I understand :-)) but to me it's so complicated way? let's take a look in example from php.net(http://us3.php.net/try) <?php function inverse($x) { if (!$x) { throw new Exception('Division by zero.'); } else return 1/$x; } try { echo inverse(5) . "\n"; echo inverse(0) . "\n"; } catch (Exception $e) { echo 'Caught exception: ', $e->getMessage(), "\n"; } // Continue execution echo 'Hello World'; ?> I would do the same thing, I think, less complicated: <?php function inverse($x) { if (!$x) { echo 'Division by zero'; } else return 1/$x; } echo inverse(5); echo inverse(0); // Continue execution echo 'Hello world'; ?> I know this is "too simple, maybe not the best example", but can somebody please explain "the purpose" of try/catch? Thanks. -LL