In particular, you probably don’t want the GPS coordinates of your house publicly available on your blog for everyone to see.
I would like my camera info, especially the body, lens, focal length, and settings in the image. I recently discovered that software like Darktable can even take a gpx file and photo timestamps to add coordinates to photos taken on a camera without a GNSS receiver.
I should get better at taking contemporaneous notes, really, but since that hasn't happened in 30+ years, I doubt it's going to stick now.
People who can track down the original exif can recreate when, where and with what equipment the photo was taken. It's been great to identify places and people for posterity.