Have you known anyone willing to experience pain for vanity’s sake? Did the outcome justify the means?

Have you known anyone willing to experience pain for vanity’s sake? Did the outcome justify the means? As a matter of fact, I know someone who is willing to experience pain for vanity's sake. One of my friends in Hong Kong that I knew since I was an elementary schooler decided that he would go to boot camp last year to show that he is tough in his school and to be known as the first person to go to boot camp in his school. After going to boot camp, he actually said that even though it was the most painful experience he has ever had in his whole life, he would like to go again because he has learned in boot camp. To be honest, I am willing to experience pain but not for vanity's sake. The same friend told me to go to boot camp during the summer, which I will because he has learned a lot and how to deal with the hard things in life. Even boot camp will be painful it will be an experience for me to remember.