A friend of mine said that "most cars spend 23 hours per day parked, and public charging is about doing the charging in the 24th hour". Not sure the 23 is a real number though.
When I add up the 5 minutes I spent a week filling up my diesel I get over 4/hours a year. I’ve not used a public charger for months. I’ll probably save time this year. Plug in at night, unplug in the morning.
We also had a two week period of sun-zero temperatures with my neighbours standing and scraping their windscreen and windows. My car was automatically pre-heated and defrosted on a schedule. More time saved.
If you do lots of long journeys I could definitely see public charging being an issue, especially for non-Teslas. We need lots more fast chargers but in my country they seem hell-bent in building lots of slow ones.
(Note it was a wind storm last night for the whole of the UK)
The electricity company charge my car overnight on a schedule that they set. They charge in 30 minute chunks, stopping and starting the charge multiple times to optimise the network.