That would be super, super onerous – I do a lot of deletion of old irrelevant topics from Feb '13 to remove noise from search engines.
Getting a dialog pop up on every single deletion, would be extraordinarily painful, a massive barrier to cleanup.
And @boomzilla sometimes when you don’t give feedback it’s because you don’t have any historical evidence that something positive would come of the interaction. That’s why it is at the discretion of the moderator.