Gee, I guess "small" is relative. I live in a modest mid-century home; not large, but not exactly tiny either, and my 55" OLED fits my living room ideally both architecturally and in terms of viewing distance. I guess 60" would still work, but 72" would have been impractical. In terms of size, I don't feel deprived at all, and the image quality is simply superb.
My OLED was quite pricey; for the money, I could have purchased a nice 72" LED or a 60" 4k UHD and come home with hundreds in change, but my living room doesn't demand that big, and bottom line - image quality mattered more to me.