So many ‘rules’ you will hear about photography are better described as ‘guidelines’. And like any line, it’s okay if you stray off it if it suits your purpose.
I openly admit I profess to many students to try to avoid mid-day sun if they can. Most photographers agree on this point. But I also make a point to tell them, and you here on the web, that it is by no means a rule that needs to be followed hard and fast. The more I travel, the more I find myself in situations where shooting at noon is the only option and I don’t think I should never let me camera see high sun because of a silly rule.
There are still subjects and methods to shoot in the middle of the day when the sun is harsh. Sure, you won’t get a magical view of Yosemite Valley like Ansel Adams or the golden glow of sunset on a lion pride in Africa, but you can keep shooting if you change your mindset slightly. [read]