Lately, while watching a political network, where the guests are in their homes, nearly all have abstract art on their walls which really surprised me. Obviously, abstract art normally isn't based on a fixed subject & has few rules, so people are more concerned with colors & texture than traditional styles like still-lifes. I'm not insinuating that abstract is better than traditional, but just my opinion as to why the preference exists today, more than earlier periods. I've always wondered what a psychiatrist's opinion would have been of Picasso, given his artwork. They'd probably want him institutionalized due to being a danger to the public. A mind, seeing those things, couldn't be safe for the general public.