I don’t know if it is so much a shame thing with most people, but it is very private. And like most things private, it becomes embarrassing if someone else finds out that I didn’t want to know. I am not ashamed of my love of enemas, but I don’t publicly announce or openly talk about it. Like most things that are done in private it’s for me only.
Think about your sexual life. I don’t think most people are ashamed or embarrassed by it, but it isn’t openly talked about. Would you walk into a room of people and announce ‘I had a great orgasm last night!’? Or ‘My wife came 3 times last night before giving me a blow job and she swallowed!’? Some things are just private in nature. I don’t think I have ever talked about my sexual experiences openly with someone other than my partner at the time. It’s a private experience between two people. I don’t talk about masturbating with anyone. I’m not ashamed of doing it, but it is very private to me.
Most fetishes or pleasures are very private. If you cannot do it openly in public without getting arrested, then it is probably something that should be private. If it is widely accepted in public, then there is no shame or embarrassment in doing it. Holding hands is readily accepted in public and I have never had a problem with it in public. I had a girlfriend who was uncomfortable kissing in public, so that became a private thing. I wasn’t ashamed or embarrassed by it, but she felt personal affection was a private thing.
I have had colonoscopies done a couple of times and a final cleansing enema is required. When I talked to the doctor and nurse about it, I wasn’t embarrassed at all. It was appropriate for the setting and was an acceptable topic for the situation. So a lot of it has to do with when, where and what you are doing. The topic was appropriate.
If I was in a room of people who were openly talking about enemas, I probably would join in with my experiences as well. This forum is great for this. I never wrote about my experiences until I joined this site. I talked about enemas and the joy of taking them anonymously (in chat rooms), but never in person in public. So I believe it has to do more about the situation or environment and how acceptable it is than any feelings of shame.