Around 50% of the population (and the vast majority of homes) have a hairdryer.

And you don't really need "hope" to make up extra on the weekends. You will.

Unless you go places and do things on weekends.

I'm glad it's working for you. I really am. But you're a bit of an outlier. You have a short commute, a home that's wired favorably, and a lifestyle that's compatible. You've also gotten comfortable with the setup. These are all factors well beyond the 12k miles/year average mileage.