Surely it's not due to discretion because it wouldn't reveal your identity. Not many guys on these subs are shredded and slim or whatever the male ideal is. I hope it's not due to not wanting to flaunt your body.

I'm new to the world of r4r, so from a newcomer it just strikes me as odd.

If you are genuinely looking for a hookup/fwb maybe consider adding some photos and I guarantee you you will have more success.

Here's my two cents as a woman: I think it's very unlikely that I'm ever going to make a post and instead I want to browse and reach out by private message to any posts which intrigue me. Maybe take a moment to read your post and try and get into the female mindset. Happy hunting ;)