You're missing the point. Yea you could live off a 110v, as my cousin has. But would you...? Charging at a silly slow speed literally makes live around the lengthy charge sessions.
No I think you're missing the point. If you have a full charge, go drive your daily errands and use ~45 miles of range, then plug in at 15A overnight, you'll be back to full the next day. It's not like you're actually waiting around for it to do the charging so you can run your next errand.
Even if you are using 60 to 80 miles of range each day and only charging 40 miles most days, there will be a couple days a week where you don't drive that much and the charging gets ahead of the usage again.
I lived on 15A for a month in below freezing weather and it was plenty more than adequate. My brother-in-law has been living on 15A with his low range Leaf for like 8 years with no problems.
So long as you're charging as much as you're using each day it doesn't matter how slow it is. It's not like you're sitting there watching it charge. Plug in. Walk away.