FAT16/FAT32 is what you use when you want all your files to suddenly become 32768 bytes large instead of their actual file size (true story). More specifically

FAT16/FAT32 is what you use when you want all your files to suddenly become 32768 bytes large instead of their actual file size (true story). More specifically, the cluster chain got overwritten with junk data, so all files got truncated down to one cluster in length. This is why metadata Journalling exists for file systems.