About a year ago, I read an article that floppy disks did not have an unlimited life, perhaps 20 years at the max. Since I got my Amiga back in 1986, many of my floppies were pushing the 20-year limit. So I used DMS to convert them into Disk Images and stored them on an external HD on my A2000. Then I brought my external HD to my WinXP machine and copied it to a directory on that machines HD. Eventually, I could burn it to CD or DVD. But right now I have two backups, one on my PC and one on my Amiga.
Another advantage to doing this is that I can now access those Disk Images on my WinUAE setup on my WinXP machine.
I was fortunate, I only had 2 or 3 floppies that were unreadable out of well over 100.