You actually can modify your “software”, though there’s limits. Can’t really swap the kernel at all, and the OS is a bitch to alter, but the DE is totally doable. We even have bug fixers, called therapists.

Now, deleting old programs is hard, but there are tricks to reset your clock, assuming the hardware is both functional and running a standard configuration. Some folks are just wired different, so playing with the clock results in blue screens at inopportune moments.