I don't have a traditional design background, but it's inherent to me. My father was in the fabric industry, and even my grandfather and my great-grandfather were lace manufacturers.
I've always thought that design can have equal importance to the idea of internal architecture. Professionally, things can be very dogmatic - you do the architecture, someone else does the interiors, someone else does the furniture, the fabric, etc. But I think design is all-encompassing.