I'm not averse to reading sex scenes - as long as they make sense for the story and don't feel shoehorned in. If you're writing a romantic story and the characters have sex at some point, I'm perfectly okay with that! It feels as though it fits into the story.
I'm just unlikely to put it in my own comic - and if I ever do, it's going to be very toned down, and likely to be a fade-to-black thing - because I don't find the sex interesting: I'm interested in the characters and their emotional interaction.
Nudity is a whole separate thing. I grew up in Sweden during the late 80s+90s - I watched a lot of 70s live-action children's tv as a kid, and that stuff had NO qualms about nudity. The old live-action adaption of Ronja the Robber's Daughter has more nudity than you can shake a stick (or dangling genital! XD) at - it's just something that happened, and it was 100% divorced from sex. It was just people getting up out of the bath to get a towel, or changing clothes, or whatever. None of it was depicted in a remotely sexual light; no lingering camera shots, no toned torsos, no sweeping shots of naked breasts, nothing.
However, I have an international audience for my comic, and I realise that not everyone has the same cultural context as I do, and they do consider nudity to be tied closely into sex, so I tend to not draw it very much.