Trends in dress are not established by reason; they are established by imitation. What people see on TV and in the movies is what they adopt as fashionable and what they accept as normal. Watch TV or the movies any day and you will see conservative values portrayed as uncool and old fashioned. On the screen everyone has a delightful homosexual neighbor or two, everyone has children that thrive with one parent, every businessman is evil. That's what people imitate.