This generally refers to the rapid developments in the technological field, especially related to electronic products, including computers.
Some important reasons for upgrading your computer, even if it has been giving you satisfactory performance
Increased Processing speed
You have no idea how replacing a simple CPU with something a lot better work make.
Faster access to memory
Improving your overall CPU speed will generally improve the speed of transferring data from the CPU to RAM.
You should not be surprised if quite a few of the latest software you like to use is unusable because of the advancement of this technology. This is a key reason to upgrade your system.
These are just some reason to upgrade your system and make things better for yourself!