Why store them online when you can carry a backup file around on any media.........a flash drive?You can also just copy the entire profile folder to any new version of FF and that usually works. --~~Go Lions....back to back Cups!!~~
The answers to that are obvious. Theft, fire, sudden moves/loss of possessions, being away from one computer and wanting to add to another computer without going home. Seriously. And thumb drives fail all the time!
I have 6 of them. lol
6 backups. Wow, that is a lot of hassle when you could just cloud them or something. Who has time for that?