Precisely the opposite in the case of cave art, eddie. Analogously, a lot of Eskimo carvings exist not for their utilitarian use, but because they were forced "indoors" for so long at a time, and needed something creative to do. The cold climates in each case mandated it. People have far less time for even reading today than in my Grandfather's era, hence the lower literacy rate. Just like the industrial revolution, the tech revolution has made work hours longer, not less as planned. These present pandemic lockdowns are an exception. Most of the ancient upper Paleolithic sites I've studied myself were abundant with artifacts far more beautiful than they needed to be for utilitarian purposes. They were proud of their craftsmanship, and many less than ideal objects were thrown aside. Having all kinds of mega-predators around might have made life risky, but at least they didn't have to worry about crazy lane-splitters on the freeway or gangbangers packing guns.
Here in California the food resources were generally so abundant that men were often lazy. Of course, other than hunting and raiding parties, women did most of the daily work, but even they found time to weave some of the most intricate and now highly collectable basketry the world has ever seen. In the Southwest, it was lovely pottery. The men had plenty of time to sit around flaking beautiful objects, or carving soapstone. Over the mountains, out in the Great Basin and after most of the great Pleistocene lakes dried up, life was difficult indeed among Paiute tribes. But even they found time to travel far on foot to waterless special locations for annual rituals and arranged trading events.