What is art?

My husband has always claimed that he doesn't have a creative bone in his body. But I had the opportunity to go out of town recently for a quick trip and when I came back home, I discovered this creation. He thinks it's not artistic at all because he just figured out a pattern and repeated it, because it's very structured and logical. He had lots of excuses, I mean, reasons why it wasn't artistic or creative. I think he's just in denial.