When sending files (especially images) I would like to see metadata removed.
Usually, sending files is about the file contents and not the file’s metadata.
Imagine I took a picture with my phone or camera that automatically attaches metadata, like capture settings and especially the exact GPS coordinates. When I then send this picture to someone I don’t want them to know where I live just from this image.
I think any metadata that is not strictly needed should be removed before sending any file to prevent any possible leak of sensitive data.