To all users who visit but don’t engage… can we ask you why?

We can clearly see many users regularly visiting the site, however only a small fraction of users engage with the community by commenting or posting to contribute to the site discussion. 

This has been puzzling us Mods for some time now, so we’d like to hear some feedback about what it is about the site that keeps users from engaging? Is it:

If any user is worried about interaction backlash, you can now post anonymously and say whatever you want without any negative effect. If you are unsure about posting, we would recommend at least giving it a go anonymously - after all, what could go wrong?

We’d appreciate to hear your feedback about what is keeping users from engaging.