Your story reminded me of myself. Every time I stay with a friend for a holiday, I'm always very quiet in the morning so I don't wake everyone up. I think this habit goes back to my childhood when I tried not to wake my dad, who worked shifts. Whether I've been pre-programmed to be this way or if it's simply because I'm a naturally quiet person, I don’t know; however, I don't mind it at all since I love the peace and quiet.