Why are we putting all of this storage into phones? Are you looking to keep all of your photos on your phone so when you break it/get it stolen you lose all your photos?
It just doesn't make sense. I download more movies than I can watch more music than I can listen to for flights, more apps than I use, take more videos and photos than I will ever use. The google photos app auto-deletes my old backed up videos/photos as needed unlike on Apple devices where you have to delete the folder yourself. I never run out at 64GB.