When did laundry become therapeutic?

I'm not sure if this is one of those "you're getting older" signs, or if I'm just going a bit funny.

After a long and stressful weekend visiting my Mother, a full day at home doing nothing but laundry was actually quite relaxing for me. The methodical sorting, washing each load, doing the hand washing items, putting the clothing in the dryer, and calm, relaxing folding of the warm clean clothes.... I am going insane.

When did laundry become a form of stress therapy? I've got to admit it's cheap therapy, but it makes me feel like quite the drudge.

I have to get out more.