As several people (including WDZ) already said:
since a long time, posts with reasons are already given when threads are closed and the reason isn't dead obvious...
This discussion is about discussing something which is already done! Instead of argumenting (and calling mods lazy) look at the
latest posts page and scroll thru the pages and find the locked threads and see for yourself...
In those years I've been here I have never seen a locked thread which I didn't know the reason for why it was locked (or maybe 1 or 2 out of the thousands threads in those years)...
/ 
