If I'm not leaving the house, I never wear makeup -- I want to give my skin a chance to breathe! Plus, it just seems like a waste of time (to apply) and a waste of product for me ... there's other stuff I'd rather do if I actually get a day to sit at home all day! (Which doesn't happen very often ... we go to church on Sundays, and sometimes on Saturdays we have stuff to do ... so only when we actually get a Saturday with nothing to do!)
Likewise, I never blowdry my hair if I don't have to go anywhere, to give my poor hair a break from heat styling!