Even if you have the space, a lot of antique furniture just doesn't fit with modern lifestyles. Even if I had a big formal dining room, as in the house I grew up it, I'd use it once in a blue moon.
The article also notes furniture like rolltop desks. My dad has a beautiful one that mostly serves as a display cabinet in his living room. I'm honestly not sure what I would do with it. I have my own shelving to display things and it would be pretty useless for any actual work I do. (As I kid I really loved sitting at that desk and doing kid-like scribbling at it.)