All bad habits are genetic. No matter what your maths teacher or anyone else may say about it. Or your mother for that matter. It's not your own new thing and I dont think its the planets in divine motion out there either.
Your bad habit, that is to say MY bad habit, of bringing home a suitcase full of unwashed laundry is not something you developed out of thin air. Nope. I bet your dad does the same. DAD, the other contributor to my gene pool remember?
I'm sitting here waiting for the washing machine to finish its cycle of washing his clothes. He is sleeping off the jetlag.