I think this depends too much on your car and how you use it to make generalizations like "is usually overkill".
With an 11kW charger and assuming 12h in the garage, I can charge 132kWh in a day, which is far more energy than my battery can store. Thanks to this, when I park my car and decide whether to plug it in, all I need to think about is whether the car has enough charge now for my needs tomorrow. If it does, I leave it. If it doesn't, I plug it in.
With a 1.8kW charger, I'd only get 21.6kWh overnight. In my car, this is ~100km of range (~60mi) and about 30% of the battery. Now I either need to charge it every day (and add the hassle of unplugging/plugging every time I use the car) or I need to think about it more.
It's a matter of individual preference whether it's worth a few hundred dollars to avoid that friction but to me it's more than worth it for something that's part of my daily life.
With an 11kW charger and assuming 12h in the garage, I can charge 132kWh in a day, which is far more energy than my battery can store. Thanks to this, when I park my car and decide whether to plug it in, all I need to think about is whether the car has enough charge now for my needs tomorrow. If it does, I leave it. If it doesn't, I plug it in.
With a 1.8kW charger, I'd only get 21.6kWh overnight. In my car, this is ~100km of range (~60mi) and about 30% of the battery. Now I either need to charge it every day (and add the hassle of unplugging/plugging every time I use the car) or I need to think about it more.
It's a matter of individual preference whether it's worth a few hundred dollars to avoid that friction but to me it's more than worth it for something that's part of my daily life.