There is actually one use case for it. I create a yearly backup that i distribute across my friends (mostly via CD-ROMs) which include all my files that i can’t afford to lose, like encryption keys, keepass database, crypto wallets (everything that isn’t encrypted data gets aes-encrypted via gpg and a 512-bit key which is stored in the keepass database). But if say a malicious actor gets access to it by social-engineering they could start brute-forcing the keepass-database (good luck though with my passphrase and 10-rounds of argon2 with 4-threads and 4gig vector size), by splitting it into fragments that vector would be closed.