So, I'm ace and I do enjoy BL,GL straight romance/smut

I was wondering how is for people of other sexualities? I know straight girls read BL, and I know why, but what about lesbians and BL? What about gay guys and GL? or other asexuals stand on smut works in general.

I understand liking romance no matter the genders, but I am referring to smut more than anything else, lots of smut works have little to not plot, and not so much character development, the only appeal is sex, so I mean, let's say a straight guy reading a no-plot-smut-BL, what's the mindset behind that?

I personally watch them buuuuut, I get bored easily If I don't have an emotional attachment towards the characters, or if the plot is not good enough, I tried watching rl porn but is..... boring? I can't watch it for that long UNLESS the story involves like, some plot? Like, make my heart race please.

But I have to sometimes admit I find myself not so much attach to the characters or the plot, and my heart my not race to them being together but the sex scenes are so bizarre that I want to keep watching for the sake of watching, like this manga with a guy introducing something into the urethra, I was O_O WOW, or this other guy doing a male boob job HAHA, or if the art is drop dead gorgeous, I feel like I'm in a museum watching ART.