Well, Hamilton who drives an F1 car for a living special ordered his Pagani Zonda with a manual. He drives cars with the most advanced, fastest shifting sequential trannys in the World, but he stated he prefers to shift himself.
As someone who had a manual, then auto, now wants a manual again. I hate driving autos, but that's my preference, and plenty of people feel the opposite. I hope traditional manuals will stay available, at least they do for now.
As for lowering the price of the new M5, it doesn't actually, the manual will be a no cost option.