I second llninja on don't futureproof. Most people will never need more than 30A. (Note I'm saying 30A real charging, not breaker size/model number as some units are advertised. That would be a "40" = 30/32A charging depending on the unit)
I'd run the bigger wire just in case, but no need to go crazy here.
Just consider this:
You have to sleep some time. Let's say you get your full 8 hours.
Even if the car is away all day long and only has those 8 hours to charge, you're still getting 30A*240V*8 = 57.6kWh
Approx 90% for charge losses and you're looking at about 52kWh you can recharge every single night.
That's ~200 miles every single day you'd need to exceed in order to need a more powerful EVSE.
The only advantage to more power is faster charging, but same thing, only different timelines. That would mean you need to turn around and do 200 MORE miles in less than 8h? -> DCFC, not home charging.
I mean, the incremental cost isn't that much. Go wild if you want, but it's not really a need to go higher than that.
Not even touching on the fact that many homes would need electrical service upgrades to add more than a 40A breaker, which costs far more than the slightly bigger EVSE might.