Why is the class ._dtor symbol not virtual?

[12345swordy via Digitalmars-d]

I quite curious on the rational behind the decision, as currently 
it's not very attribute friendly, which makes destroy function 
@nogc for certain classes downright near impossible. From the 
time that I have looked into this issue(and from frequent 
discussions) many of the issues and bugs is the result of this 
bizarre design decision.