I think a lot of us become set in our ways and to some degree continue as we were brought up. There was so much cleaning, cooking, gardening and shopping etc to do in the 50/60s, I can remember my Mum feeling guilty to be sitting in the sun for an hour! My Dad was out of the house by 7am six days a week and continued getting up and ready before 7am to the day he died.
DH worked away and just rolled out of bed and walked to his office for 9am, whereas at home, I was up at stupid o’clock to clean out kennels and do a 50mile round trip to take the DDs to school by 9am. In fact, when DH took early retirement, he’d get up 2 hours earlier than when he worked to take over the dog duties.
I don’t think we are martyrs though - each to their own.