It depends on how much they are used and what kind of conditions they are stored in. Every time a floppy is read or written to, it's lifetime is shortened. Floppy based games are the most likely to have problems due to high disk usage. Applications that are installed once on a hard disk are more likely to survive. Floppies are not a realiable data storage medium and whenever I buy an Amiga program on floppies, I immediately make an ADF image of the floppies. This also tests the disks and makes sure they are good before I try to install and use the software. :-)
