Spirk. The majority of nsfw Trek art is Kirk and Spock gay stuff, there's almost no heterosexual art, much thanks to Tumblr users being what they are. Not a fan of seeing a male character I like have a dick up his ass, or even worse, drawn without a dick to satisfy some artists self projecting onto the character. My gut reaction will always be to find these things degrading and off putting, even when there's skill and talent in the art. I will never understand the urge some women have to turn their manly crush into a flamboyant homosexual or to cut off his dick.

Yaoi has ruined so many female brains.