I look at these cave paintings, tens of thousands of years old; then I look at my house, repainted about 7 years ago. I am asked to believe that my house paint is the latest in a high tech, modern world. Those cave paintings were done by ignorant savages in a pre-historic age. Notwithstanding, I wish I could get the savages to come paint my house. :^/
I'm not down with the "savages" remark -- they had the sophistication to create their art in places under the Earth that were (and still are) difficult to reach and difficult to illuminate without asphyxiating themselves. And they didn't try to foist it off on everyone regardless if they could appreciate it. ;^)