Interesting question and even though I don't relate to the specific kink of body shaming and degrading (apologies if I interpreted it wrong) that the OP is asking about, I am still keen to answer the question by adding my personal preferences, views and experiences on the broader category of humiliation hoping I am not digressing much...lol
I have a complicated relationship with humiliation. When I was new to kinks (and quite vanilla), I did not quite understand it as a kink and many a times took it as a personal insult. Even now unsolicited humiliating or degrading comments by random people is something not acceptable to me. However, having said that, in the past year I have actively explored my submissive side which has broadened my kinky horizons and I now have a relatively better understanding and more mature outlook on the subject.
I have figured that once I can trust a play partner enough that no matter what is said or done in a session, the mutual respect and admiration for each other remains intact between two individuals, it is healthy for me to explore. I first got introduced to humiliation when I did tasks on submissive poses and objectification. I have found that what appeals to me most about these aspects of humiliation are the enhanced feeling of submissiveness and being subjugated by someone in authority and control.
My interest in the subject further increased when I was given a task of masturbating in a submissive position. Now this small step was significant as it combined one of my likes with a kink I was hesitant to try due to pre-conceived notions of it being 'embarrassing' to be performed in front of someone but after doing it I felt it promoted me to feel blushy and turned on as it enhanced the feeling of intimacy and gave me a sense of my body (and mind) belonging to or under control of someone else which I think is a turn on for many subs. Since then I have tried a couple of humiliating (maybe degrading) tasks like crawling with objects in mouth.
The above are just examples of kinds of humiliation that I have explored and why they appealed to me!! The bottom line is that this is a highly subjective topic and for me, I am only comfortable to explore it with someone after building a foundation of trust, friendship and mutual understanding of each others preferences!!
