What? Oh no, now all the insane people will spill over to the other boards. 
No seriously though, Shutting down Off Topic is a really crappy idea. The off topic was one of my favorite stops on these forums. I hope there will be such an uproar that they will rethink this decision.
And what kind of stupid reasoning is that anyway. The off topic was there to discuss ... well, off topic stuff with people who I knew from the boards or with people I don't know but of whom I do know that they have roughly the same taste in media and entertainment as I. And how does it hurt the boards in general? Who came up with this?
P.S.: And I don't want to move to a group either. The whole point is that it's public and that people can see it and contribute without havng to search it out on BSN. It adds diversity and flavor to the discussion. Bad idea BioWare.