OK guys I am novice at this, so some explanation from those of us who got some experience would be nice!
Considering building my own home in near future and wondering why one not use solid concrete structure for the whole house? Say same as large shopping centers. 50mm walls all round, brick outside for looks and steel frame and gyproc inside. This will give you super-reliably structure, thermally stable. For two story house also sound insulation due to concrete sealing.
I can see a lot of pros and very few cons:
against:
price probably be higher
harder to modify (concrete walls)