Okay if so-called secular music is bad for me, then really I must be doing something wrong?

I have never really doubted 'secular' music to be wrong. I mean there is some questionable music out there that has horrible lyrics, especially some rap that talks about committing crimes, and shooting people, but to single out all non-religious music as bad sounds like a way a group of people are turning their beliefs into a cult, as they do not want you being influenced by anything other than what is in their program.