I'm one of those who uses the living room for my studio because it is the largest room in the house (25x31). We don't entertain and spend our relaxation time in the kitchen/great room. We turned the formal dining room into a library to house hubby's book and artwork collection. Using the rooms as the original owner determined 24 years ago would be a complete waste and not a reflection of who hubby and I are. If the master bedroom was the largest room in the house and I lived by myself, that would be my workroom. Use the space to make you happy and not to meet other people's expectations.