Managing a massive library of save states isn't just for power users. It allows for:
Do you already have (homebrew) installed on your 3DS? 3ds 100 save files new
Periodically boot into your older backups to ensure they still load correctly. Managing a massive library of save states isn't
Before managing a massive library of saves, you need physical space. While the 3DS officially supports up to 32GB, you can use cards as large as 128GB or 256GB if you format them correctly. 3ds 100 save files new