We had a little anxiety too when we bought the car. It was more money than we had spent on any car, however we did lease an electric car that sold us on the concept. To date we had one minor issue that Tesla fixed promptly. They also gave us a loaner S that was stupid fast!!!
I am convinced that this car is the perfect primary car. I used to think it was a good second car, but no more. If you really need to travel beyond its limits just rent something. We have solar on the roof and a 220v charger in the garage and the tank is full each morning if we remember to plug it in.
All of the benefits of this beautiful machine must be weighed in the light of future issues. I expect the windows will rattle in time, and the seals stop sealing. Perhaps the mirrors will no longer retract. We can deal with these things, but hopefully it will be at the point where the state of the art has surpassed this milestone car where we just feel compelled to replace it!
For now we are in love with our Model 3. There is no better car.