And more importantly, you can choose what destructor to call. This is perhaps what's most underrated about defer, because defer can select among many different destructors possible, at multiple different levels (group free with arenas, individual free, etc).

> If you don't explicitly invoke a destructor, you won't get a destructor.

When you explicitly invoke a "destructor", you do it on many code paths (and miss one or two)

>The fact that you can explicitly invoke the destructor to happen later

You don't specify where the `defer`-red "destructor" will be invoked.