Be honest, your camera roll is your only journal and you have never backed it up
Be honest. When did you last back up your phone. You did not. Everyone I know has ten thousand photos sitting on one device that could die in a toilet.
That is not a memory keeping system. That is a countdown.
I pay two dollars a month for cloud storage and it is the cheapest peace of mind I own. Nobody wants to hear it because it is boring. Boring is what saves your photos.