And a standard home in the US is made of 2x4s and plywood.
Building a timber farm home that will five times the insulted value of a standard home, and I lived in a 1800's log home with a wood stove that was the warmest home I ever lived in.
The thicker the timber logs the higher your insulation R value as well.
Heck rent a RBNB one yourself in a cold environment and test it yourself maybe you could give the wifey your log while staying there by the fire! Hey!