I don't think that any sensible person would sacrifice their sleep over anything. No one works at night, do they? Unless you are in one of those professions which requires you to work in shifts. Most normal working people work 8 hours a day and then get home, spend time with their families and then like good people, they all go to bed by 9 or 9.30 so that they all can wake up fresh in the morning. At least that is what I do, my family does and my friends and their families on a normal working week.