I don't personally find anything bloodplay appealing at all. As a younger teen, I did have some self multination type behaviors, and to this day, I find that having needles stuck in my arm (as if to take blood or insert an iv) a very relaxing experience that's even more so when I'm able to do it myself.
I think that may be an important note for anyone confusing blood play with cutting, as they clearly don't necessarily go together. I couldn't intentionally harm myself without having memories of the uber depressed oft suicidal drug addled kid I once was, and I gotta say, doesn't really turn me on lol.
That said, there's still an aspect of it that romanticizes at least some extent of violence and self harm, and blood in general. This is, understandably, taboo, as for most people, blood is best enjoyed when it remains inside the body lol. It totally squicks me out, but I really don't have a problem with what other people do to their bodies as long as theyre doing it safely (taking proper measures to not get infected or pass diseases, for instance) and are doing it for mentally and emotionally healthy reasons. Same thing with stuff like "rape play" or whatever.