We need art, too. We may not know what we need it for, but we evidently need it for something.

We've been making art for a really long time. We've been smearing colors onto surfaces for at least tens of thousands of years, and carving patterns into rocks and shells for at least hundreds of thousands of years.

Everywhere you find human communities, you find some kind of art. We must need it for something. If we didn't then it wouldn't be so ubiquitous.