Masonry walls can be built of concrete (poured in place or precast from a factory), unit masonry (bricks and blocks), or concrete poured into insulated factory made forms. Any of these structural wall systems can be covered with a thick coating of cement plaster called stucco that is very common in Europe. (from Old High German stucki & German Stück). Synthetic stucco (EIFS) also originated in Europe long before it came to the US.

You are on the "Building a Home" forum. No one here wants to just build a house although many may adopt builder jargon like "my build" perhaps to sound more knowledgable but I would never use it with a client. You should also consider that the choice of structural materials is a often a cultural, economic or severe climate issue. You should also understand that wood is a renewable resource although regulation of cutting is necessary for that to happen. this is not a simple issue. There would be fewer people in the Pacific Northwest if there were no logging industry.

I have worked for an architectural firm in Geneva and visited many friends homes in France. What has been immediately noticeable is the lack of space in their homes especially in the bathrooms and kitchens. In one side by side duplex home with garages at either end, I was able to stand in one garage and hear a conversation in the other one though the hollow cores of the second floor precast concrete slab system.

I find it is more expensive to build many desirable features into an all masonry house. Wide windows are an example. Europeans, like many of my professors in architecture school, like tall narrow windows that limit exterior views and decrease privacy. Most Americans like wide windows in order to take advantage of exterior views or even when there is no view and privacy is not negotiable. Wide windows in masonry requires expensive steel or composite beams. Thats not a problem in Europe because it is cheaper than imported engineered lumber that is so prevalent here.

Nor is concrete usually considered a good finish material because it is cold to the touch and is difficult to finish well. Covering masonry walls adds cost and loses floor area. The US has a wide variety of climates and in many regions energy conservation is not only desired but mandatory. Masonry has some good energy conservation features but it is not a good insulator and adding surface insulation adds cost and loses floor area. The additional cost of this kind of construction could probably only be recouped in a severe wind region like the coast of Florida.

You should be aware that the Pacific Northwest is a severe climate zone for rainfall. This is not a good climate for stucco or any wall without a secondary drainage system, in fact, I believe it is require by code now. A better masonry system would be a brick veneer cavity wall system with concrete block (CMU) or wood/metal studs as the structural wall. Incidentally, residential building codes all contain requirements for not only wood framing but for light metal framing. It is possible to build a conventionally framed home for light steel and fiberglass faced gypsum wall sheathing. I suppose the floors sheathing would still be wood. The conservation of wood is not a viable reason to build with masonry.

I caution you about justifying the design of your home in the interest of your children. You should not assume that they will want to live in this house or that their jobs and marriages will not take them elsewhere. I have worked for many people who have bought a house from retirees who were moving in order to be closer to their grandchildren.

So, live here for a year or two and give this idea some time to mature, then hire an architect who can help you find the best design for your house.