What are they thinking?

I just don't get it. Two things -- Singers with good music in the past now singing crap and people who enjoy the crap music. What's up with that?! I remember Nelly Furtado's music when she first became big and liking her unique voice and style. Now she looks like a hoochie mama and has totally changed her sound to hip hop that sounds like crap. I've seen her performance of her new song "Promiscuous" on SNL and was quite disappointed that she completely changed her image and music. Jewel is another singer I enjoyed listening to in the past who's turned pop. What is she thinking?! The reason why these artists became famous was because of their originality and unique style. Why would you change that? I just don't get it...and the people who enjoy their new crap music I don't get either. To quote someone I had this conversation with, "The worse thing that can happen to an artist is success." I agree.