The confusion seems to be about why we're closing it, not that we're doing so, unless I'm missing something here. I'm also not referring to mistakes made specifically here (though I'm sure there were some) - forums kind of died off as a whole (there are exceptions, of course, but they are few and far between at this point).
If the concern is that the forums are going to be deleted though, I can offer at least a small bit of good news there - they won't be. They'll be closed but left online in a read-only state.
If the concern is that the forums are going to be deleted though, I can offer at least a small bit of good news there - they won't be. They'll be closed but left online in a read-only state.