Hello, My contractor wants to use steel studs for the wall, all around my apartment. I understand that this means we must decide now where we want to hang things on the wall, so that he can put blocking in the relevant places. I also understand that with wooden studs we don't need the same amount of blocking, presumably because nails can go into the wooden stud if need be. With the above in mind, why are steel studs used at all? And, is it customary for a contractor to use wooden studs if the customer does not indicate either way? Thanks!