But how often do you need to go far the next day? If you come home with 10% charge (30 miles), and then plug in for 10 hours and add another 40 miles, is that not enough for work and errands the next day?

I don't know about you, but I mostly do long trips on the weekend. As long as I have enough to get to work Monday morning and am full by the weekend, that's almost always good enough for me.