I will set your minds at rest with another story of a trendy hairstyle. I used to know a woman who loved her 80's bug hairstyle with large quantities of hair spray. Why did she love her hairstyle? We won't probably understand her. But I believe you met such strange people on the streets every day. Hairstyles from 70s and 80s are getting more and more fashionable.
May be nothing can be done to change these people who love their retro hairdos. I may just say a few words about these people who will never change their high school hairstyles. Come on, people grow up! You are already adults. Just try to find any trendy hairstyle, which can successfully replace your timeless teen hairdo. Remember that this was your trendy hairstyle two or four decades ago. I guess you don't want to become an outcast person. No matter how much you like your teen cut, try to think of trendier hairstyle. You live in a society that will judge you by your appearance. Look for a suitable trendy hairstyle. Go out and you will find it.