The problem is not declaring it haram, but you stating that it is a practice of our ancestors and making it compulsory.
Every act that we do cannot be authorised by the Quran, which side of the road to drive on for example, but to declare the left side is a sunnan of our ancestors and make the right side haram, that is wrong and that is what I am trying to tell you.
Making it a religious obligation when there is no verse in the Quran is SHIRK. Chop a bit off if you want, but Allah and His Messenger do not authorise this.
Only those who have no care in the world for others can have a nice day.