yeah- seems there is a tendency of oneironaughts to enjoy "nightmares" more. I am one of them- I enjoy most of mine because of the vibrant emotions they bring out that I might not have otherwise have gotten to feel, even though I get very few dreams that I'd classify as nightmares.
I wonder if all this "practice" has made us able to have more control even in nightmares, or indeed simply perceive them in a more detached way, or perhaps it's just that we view the same experience differently simply because we understand it more.
Perhaps it's a combination of those things and it also depends on the person and dream in question.
Personally, I don't even like the name "nightmare", what I have is "highly emotional scary dreams" ,and I practically never have even those- since I started LDing out of all my dreams I maybe had 1-2 that would qualify.