I didn't request a blanket delete however. I do understand the desire for posterity, and generally very much appreciate the lack of [deleted] a la reddit.
It's not hard to notice the lack of delete: it's somewhat well known edit windows close; then the delete window soon after. Maybe upfront documentation would be welcome. I imagine many people like us didn't think of it until after wanting to delete something.
I'd be very open to removing usernames from posts (they bear little in >99% of cases anyway). I'm wary of having entire posts be easily deleted, especially considering replies. My country does have a right to be forgotten (Canada), so I assume I could easily email or snail mail to have my profiles wiped. I wouldn't exercise this, though perhaps I'd consider a disassociation in the future.