Nothing if it still does the job. I buy new things when they can't do their job anymore or I have a new problem to solve. My desktop and car are over 12 years old.

Why don't you use floppy disks then?

I've answered that. Because you can't read and the problems that I need to solve have changed.

What are those "problems" that you can't solve with floppy disks? Just use more of them. They still work, remember?