But the dining room is not inherent in an open concept, and it's not absent in closed spaces. If anything, I find the "useless" formal dining rooms tend to exis

But the dining room is not inherent in an open concept, and it's not absent in closed spaces. If anything, I find the "useless" formal dining rooms tend to exist more often in their own separate totally pointless room, where open floor plans tend to have more "usable" everyday dining spaces. not that you couldn't thrown in 2 or 3 or 4 dining rooms if you really wanted to be wasteful.