I must have around 5000 photos in my archives and backed up to Google Photos / Amazon S3, etc. This includes old pre-digital ones from various family albums, which I've scanned. I have a strange compulsion to archive 'stuff' like this for posterity. Even though, logically, I know it's of no interest to anyone else apart from me and, after I'm gone and the 'rental' is not being paid on it any more, it'll all disappear forever.
Still, even though I very rarely look at any of it, I'm nonetheless comforted by the fact that it's in safe storage. At least for as long as I'm around.
Ironically, one of the few things that actually gets me looking at old photos again is Google Photos "This week X years ago" feature, that pops up in the mobile app. It's fun to bore the missus with such nuggets of info as "Did you know, this week 7 years ago, we were in <some place> visiting <some person>?"