I've had my iPad mini for about two years. I regularly delete photos from it (mostly of the cats) or I'd regularly run out of space.
For sentimental reasons, I'm unable to delete certain photos, like the first one I ever took with it. . .
These are early photos I can't delete either.
It's sort of silly, I guess. They are backed up and saved in two locations. I also have photos of my late Grandmother from the birthday party we gave her about 7 months before she died (oddly, today marks the one year anniversary of her death).
Is it just me? Are you unable to delete certain photos too?