I just paraphrased what other people had said. I'm not sure if it's a direct quote-- or if it came from Roddenberry or someone else involved with Trek or a fan. I think an anecdote from Patrick Stewart illustrates it well. When he was first cast as Picard, an idiot reporter asked Roddenberry at a press conference, "Wouldn't they have cured baldness by the 24th century?" Roddenberry responded, "Shut the **** up." ...Well, no. He said, "In the 24th century, no one would care." I get the impression in these movies that Kirk would say, "Hahaha, look at baldy!" and then adjust his toupee. That's not to say humans should be "perfect," although Roddenberry sometimes got those notions which is why he was rightly kept the hell away from scripts most of the time.