You have the choice to do something else and were not reared since early childhood for a lifetime spent cooking and cleaning after others.
Also something I was thinking about lately: in every other human endeavour there has been increasing specialisation and humanity has benefited from greater productivity. Why is domestic duties (cooking, cleaning, looking after kids) something where we cannot have specialisation? I don't really care if the man or woman does it but would we not benefit from one partner doing most of it efficiently rather than both doing it badly in between stressful jobs?
For various reasons, many families don't even have the choice anymore. They need both parents to work fulltime to make ends meet.