There were very good reasons why I chose to use masturbation as an example: 1) just like homosexuality we hear the modern culture telling us that it's ok, natural, and there's nothing sinful with it. 2) just like homosexuality, there are many people who are quoting scientific research to say that it's normal and healthy in some cases. In fact there's an episode of Scrubs where one male character tells another to engage in the act to relieve some stress and tension. 3) I still have yet to hear of high school boys and college freshmen stand up and proudly proclaim in their school's cafeteria, "I touch, and I'm proud!", but I known of an incident when a couple of students a year after I graduated high school stood up in the cafeteria and proclaimed their homosexuality.
And I do agree with you that the sin is made much worse when pride is attached to it, but there are one percenter motorcycle clubs who have patches that are awarded to members for violent acts such as rape and murder and for some of those clubs theft is a way of life as they steal motorcycles and other objects. So by wearing those patches, they are proclaiming pride in their sin.
I actually thought about using murder, rape, and theft as examples, but I know that some people would have had a huge problem with it. So I chose to compare it to a sin that is in the same category, especially since self-abuse is considered by the Church to be a very serious sin.
