People routinely drive 22,500 miles/year in SoCal. It's called a commute, plus a couple of road trips for flavor if they're lucky. They then run out of their 36,000 mile warranty (e.g., Honda) in less than 2 years of ownership.
I drive upwards of 30,000 miles/year. 100,000 miles to me is about 3 years.
On the other hand, there's much less value to me in a 3-year old Tesla. I wouldn't consider owning one out of warranty, and there will be enough improvements in the hardware alone 3 years hence that it will make sense to get another one anyway.
As with laptops, at some point the curve flattens. But for now, today, my advice to ALL prospective owners is to seriously consider a mid-mileage CPO AP1 Model S with included supercharging for $45K or so (yes, they will go fast) until the dust settles. Drive it to 100,000 miles, and then load up with a new Model 3 or S/X/Y in 2019/2020, when presumably we'll have more mature/any FSD plus some other overdue features - including but not limited to HUD, 360-degree view, in-car hotspot, side camera stalks instead of side mirrors, and the list goes on.
I like the Model 3 to an extent - but there's exactly nothing in it that makes me think it's any better *today* either in value or features than a CPO AP1 Model S which has the depreciation mostly accounted for at the aforementioned price point.
Show me stop sign reaction (as opposed to just recognition), the same for traffic lights, and the return of 2nd car recognition and speed limit sign recognition and I might feel differently - but not much, and certainly not at this time - now 8 months into 2017.