Keeping my tie tied throughout my last 2 years of highschool (we wear a uniform here) was the very reason why the knowledge hasn't sunk in.
Another good reason to untie ties regularly is that the tie creases. When it inevitably unties, the crease becomes bothersome.
They wouldn't let you wear a clip-on? I always rock the clip-on. I can't be bothered to memorize such a tedious process, I have big things going on. BIG THINGS.
"They call it 'The American Dream' because you have to be asleep to believe it" - George Carlin