Whether electrically preheating a car is a necessity or a luxury, the fact remains that the ability to do so is an asset to those who would like to use it.
You can't force anyone to use it against their will.
Well maybe the manufacturer can by not allowing the car to drive; if just to protect the plastic trim from damage as it gets brittle with severe cold...
Dig deep and you'll find a reason for anything. If none can be found, dig deeper
I would like to be able to preheat the battery pack within its optimal temperature range. Though with a large battery pack (50 kWh is the smallest capacity Tesla offers) and gentle draw during the first miles (residential area, cautious driving in slippery conditions) it would not really be necessary.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gmeter or 0.13 Mmile.
For confirmation go to people just like you.
For education go to people unlike yourself.