Laundromat vs. Laundry on the lot: Which do you prefer?

I more or less ignore the laundry system at home for my sims. One or two of my households have a dryer and washer, those households also have djinns (when they make the house sparkly clean the laundry piles vanish). The laundromats I ignore completly, not really by choice, I just don´t remember that they are a thing.
I do enjoy doing laundry in RL. That´s actually not a lie. :D
I never iron, though.