I never claimed it to be hard because it's realistic, I just said it's not the easeist sim to drive.
Competition is one of the reasons people move over, we're human beings, we get tired of the same over and over again and want a new challenge. Another reason is because the content is very interesting new stuff being added all the time. The physics, if you have just a bit of determination and some sort of talen, you can adapt to.
By adding mouse and other controls they can reach a broader group of people, what's so wrong in that.