Following your maxim you'll wind up with a bunch more code, but I'm not sure what actual benefit you're hoping to wind up with in Perl. If you just use autodie and properly scoped variables you'll get the same effect with fewer bugs. (Assuming that you its error handling behavior is sufficient for you.)

Of course this doesn't hold if you're using a different language. For instance in C++ stuff doesn't get closed at all and you'll leak memory. Alternately in a true garbage collected language like Java it won't get closed until the next gc run, and you can wind up running out of resources because of leaked handles, which is also bad.

But if you're coding in Perl, you might as well take advantage of the features it offers. And prompt cleanup of stuff is one of them.