Programs can be reinstalled. So can drivers. You can reinstall your OS if need be. One can automate the task to an extent. Zip drives are a very handy medium for backing up your data.
Tape drives are another.
A single 3.5 inch floppy will hold only 1.4 mega bytes of information. It takes a lot of floppies and your time changing out the disks. Use one of the other methods. It will save you quite a bit of time and effort. Hard drives will crash.