Some things can be delayed, sweeping and mopping the floor can be delayed. Because if you decrease the frequency of some chores, the amount of work is still the same. If I don't make up my bed today, it's still the same amount of work tomorrow. So decreasing the frequency actually lessens the amount of work.
However some things cannot be delayed. Not doing your accounts, not doing your homework. Delaying some things only causes it to pile up. As compared to sweeping and mopping the floor or making your bed, doing the dishes is a chore that cannot be delayed. The faster it is done, the less of a burden it becomes, not just physically but also mentally. Having too many things on your to-do list burdens your thoughts with things like "I must do this, do that", leaving you with less peace.