Certainly males are more open about it, as they are with most things sexual, no surprises here.
I've talked every woman I have had a relationship with into trying them, and most would happily engage in occasional to frequent enema play.
Sadly, the one I married loved them for about 4 years, then one day said I'm not taking or giving enemas anymore. This was after full desclosure about my sexuality.
So, I collected porn, and paid for colonics and erotic enemas. She knew what was going on, and looked the other way. I even shot enema videos for about 6 years.
When I finally said I wanted a divorce she decided to out me to everyone we knew, went so far as to serve me with a restraing order for alleged physical abuse on Valentine's Day! She wasn't a very good liar and the judge threw it out.
So happy to be free, enjoying life.
As a friend says, in my case at least, "women are like heavy equipment, cheaper to rent than to own."
I'm sorry if I have offended with that comment, but at this point in my life I'm happy to pay for an occasional colonic, or a lady that is willing to be on the receiving end, cameras rolling or not.