SMS is a proven standard that works reliably.
lol
I tried RCS twice, in both cases the other end did not receive my message or at a later time.
This is not indicative of how well RCS will work as its widespread adoption continues to mature. I do understand your frustration; I just would expect the growing pains to last much longer. Remember how shitty USB C was for the first few years?
Most varieties of stone (cobble, concrete, brick, etc.) are very expensive, especially in comparison to lumber in places where tree farms are plentiful.
Also, idk if you’ve seen a modern wood house, but they’re practically hollow, save for fiberglass insulation. They use far less material than stone buildings.