MG, where are you based? Climate is important

Wood is actually a fairly good insulator. There are reasons not to build in it, but temprature is not it.

Stone houses have a huge thermal mass. If they're not too draughty, they will take a long time to heat up or cool down. Newer ones, with proper thinner masonry are less so but the old ones with 4-6 foot thick rough stone walls might as well be caves. You do need some heating in a cold winter, because the cold does get through the walls eventually. It just takes longer


Any thick, solid walls behave the same way, so concrete, thick brick, stone or adobe are all used in hot climates to keep out the heat of a hot day.