I don't know if most people charge off 120V at home. But I have heard of a lot that do.
Some EV owners don't even have a place to plug in at home! They rely on their work or public charging for charging their EV's
I once drove to Denver and back in my Leaf. I camped out on the way there and on the way back at campsites with 120V RV hookups. Since all I had was the standard "15A" 120V EVSE that came with the Leaf I used that and charged all night. I didn't quite get 100% charge either time, but it charged up close to 90%, enough to make it to the next charging station.
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