I don't really gun for relations IRL or IC, so in the past I've tried to play asexual characters either so off-putting or invested elsewhere that no one thinks to attempt bedding or "fixing" (massive ugh) them.
These days I don't care enough to actively dislike the idea, but if or when I do explore such RP, the genitalia of the characters won't matter. It would depend on whether or not I could stand writing with the mun regularly... also on the likelihood of their pulling/flicking one off at their keyboard, as that's not really my cup of tea. I'd hope they would at least have the decency to not make it obvious what they're doing, but I've been approached about TS in a pretty OOC-oriented way before so I wouldn't be surprised.
Sex/romance is just another aspect of a relationship that can be used as a vehicle for story and character-growth; it's nothing more and nothing less. I've realized that outright discarding it may be putting a damper on potential storylines with others, so I might put my oar in eventually. I appreciate this thread for letting me know in detail what to expect if or when I get around to it, lol.