You are not an idiot!
Another commenter noted that when he bought his Leaf, Nissan provided estimated range for a variety of temperature and speed combinations, and made him initial each one before they would complete the sale. Chevy should probably take a leaf (ha!) from Nissan's book and do the same.
And EPA should consider publishing temperature-corrected range estimates as well---maybe for all cars. Efficiency does take a hit from weather in an ICE car too---it's just not as severe. Hybrids fall in between---in winter people lose out on that big hybrid efficiency boost on a short trip because the gas engine still has to fire to warm the cabin and get the catalytic converters to operating temperature.
IIRC you didn't mention if you pre-condition the cabin or not. If you can get the cabin up to the desired temperature while the car is still plugged in, that will help. If you can garage the car, that will help. If you can charge at work---even with a regular 120 volt outlet---that might add enough range, especially if you pre-condition on that end too, to get rid of range anxiety.
If you do have to sell the Bolt, you might find a private buyer who will offer you much more than the dealer---especially in a state where the Bolt is not yet available. (Not sure if this site allows for-sale listings, but if so it's an obvious place to start.) Or a friend or family member might have a shorter commute, want an EV, and be willing to trade cars with you. Or if you leased, you might be able to use swapalease or similar to find someone to take over your lease. Or if Uber and Lyft are active in your area, you might be able to use a platform such as HyreCar to rent it out to Uber drivers, and maybe even make some money with it. (Or recruit the drivers and carry the insurance yourself, if you're entrepreneurial.)
