That assumes the battery degradation number calculation is 1) accurate and 2) isn't lying as to not discourage people without access to regular slow charging from buying their cars.

And you might have less degradation if you had L2 charged it primarily.

It's common but rarely necessary for people to get the largest circuit they can imagine rather than evaluate cost / benefit clearly.

I have a 240v / 20a plug next to my drive way. It cost $300 for the electrician work and $150 for the EVSE. It uses inexpensive romex, didn't require me to beef up my house's 100a service, and 95% of the time recharges the car overnight. On the rare situations where I get home from a long drive late in the evening, with the car under 10%, and drive it the very next morning, the car will have not gotten back to the "normal" charge level, but it's still perfectly usable for 99% of driving requirements... And if I'm in a rare situation where I need to charge it more than I'd get from an overnight drive I can L3 charge it.

Sure, if you're putting 200 miles a day on the car consistently, or if you've got several EVs, or if you've got a huge price difference in your "time of use" power metering contract, having a big pipe between the car and the grid is helpful.

But just as often, spending more than $500 for an EVSE hookup is just not going to be a good way to spend money. Do it if it makes you feel more comfortable, but it's rarely necessary.

You can, but it's quite slow to charge within the confines an an ordinary outlet.

Depends on your car. If you have a particularly inefficient/large EV then maybe, but if your car can do 3mi/kwh then you’ll get a little over 3 miles of charge per hour. That doesn’t sound like much but it’ll get you 36 miles in 12 hours, so could work for short commutes or if you have a hybrid WFH position it’d almost certainly be fine.

I only ever charge on 120V personally and have no problem, though anyone who was going to buy an EV planning on charging that way should run the numbers with the EV they’re looking at. ABRP can do a pretty good job of it.