I think Lady Gaga is a decadent immoral freak and the music she produces is plastic throaway garbage, but I have to give her props; she is far more talented and intelligent than most anyone will give her credit for.
Average people like this sort of music, because they can understand it within their realm of intelligence or musical comprehension. Myself, I listen to (for example) Bach's Brandenburg Concertos and I have an eargasm because I can hear EVERYTHING; most people fall asleep to it. Do you now understand, LeMans GTR? I and possibly you are blessed with a higher understanding of music, most are not.