Is social conservative dieing out and we are heading toward a more liberal society?

Are policies based on religion or idealism slowly dieing out? I remember in the early 90's when everyone was making a big deal about rap music and how it was being portrayed to children. Tupac even got sued by a city in Texas because his music supposedly "made people commit violent acts". Now that type of music is the norm and I think we are on are way to a much more liberal society. Look at marijuana for instance, it is becoming mainstream. If 20 or 30 years ago you said marijuana would be legal for medical purposes in over 15 states and certain states would be trying to legalize it people would of never believed that. I believe this all has to do with people learning that you can't force morals or ideals on people whether it's music they listen to, what they put in their bodies or how they live their life. Social conservatism does not work, telling people what to do based on a certain ideology is no way to run a society.