Ohh... ok. Are you signing in and signing back in? Are you switching between devices? Even after clicking "Never ask again" I've had that notification return when I signed out and logged back in. It's a device thing, so just going onto another device might cause it to come back on.
On a side note, how is your device's memory?
I do switch back in forth between devices all the time. This only happens on my desktop computer. My computer's memory is not an issue.
This notification doesn't bother me at all. I was just posting to let @SourRoses know that it happens to others too.