I am thankful for a garage door opener.
I have lived without a car. I have also lived with a car that was parked on the street, and another place where the car was parked in the driveway, and yet another where it was parked in a garage with a door that opened manually.
However, the best of all is what I have now--a car that can be parked in a garage that is opened remotely. That is something I am truly thankful for especially during bad weather.