The Japanese have been offering naked bikes in Europe for many years. There are a bunch of bikes they make strictly for that market that they don't bring here.
That may be true, however the naked bikes you see in the states are for the most part european and now the Japanese are trying to grab a piece of that market with their latest offerings. They may have been with the crowd in Europe but it would seem that they waited for the euro manufacturers to pave the way in the states before bringing the bikes our way.
And I love the naked bikes. There is just something about seeing the engine, the frame, the cooling system...or lack thereof, that appeals to me. Maybe it's the simplicity, nothing is there that doesn't need to be there, maybe it's that it doesn't look like what everyone else is riding. Maybe it's all of these things.