the open mind that is common on this board is missing some of the "reality" of the middle of the country: namely that in a lot of places in the US people are kind of conformist when it comes to vehicles and ~have to buy what everyone else around them buys. lots of these very average people do not want to be the only guy on the honda. it is weak minded, but common enough to be self re-enforcing. add "harley only parking" signs as needed and a group hallucination that a "lifestyle" can be bought and it becomes the ~only available choice for a huge percentage of the us.
lots of the flyover states have strong prejudices against "non-USA made" vehicles, despite the fact that their F-150 is might be made in canada, goldwings were made in ohio, or all their insta-biker harley logo gear is made in china. furthermore, lots of these "good-ole" folks especially fear and hate asia for making a better bike, and often just for lame ass racism and jingoism.
now i actually like harleys. i think they are really pretty, they sound cool, and they handle well enough for casual street riding and cruising, which is fine for many people.
that said, every time i actually put my own money down on a bike, it hasnt yet gone to harley because there are always other bikes i like better.