Men now in their 20s are the first to grow up with easy access to pornography from childhood, and they say it changed how they see women and how they form and maintain relationships, a Post investigation has found. Speaking to six heterosexual men in the age group, each admitted they had habitually used pornography to a point where it became part of their dailty routine. “Starting in like middle school, it was like, I’d come home and watch porn after school and take a nap, and it became daily pretty quickly,” one man told The Post. “By the time I was 18, it was like two or three times a day.” Pornstar Mia Khalifa first became famous for appearing in porn wearing a traditional muslim hijab. Getty Images The 26-year-old from DC was only in sixth grade when he first encountered porn — and it transformed the way he saw the world around him. “I started viewing my crushes differently,” he admitted.…