Updates are a very personal choice and *may*/will impact your system. Every computer system is different with it's own collection of customization, software installs, and hardware installs. Most updates/fixes will be beneficial but some may go very wrong. I will be unable to give you blanket statement of that everything will be alright with your upgrade and/or you will be satisfied with it.
Please have important stuff in at least two places at any given point in time... so when one place *goes away* you have that second place to depend on.
I upgraded to Win 8.1 without any issues but I had an known working good image of my system before I chose to move forward.
It is your system, you may choose to move forward with as little or as much precaution as you see fit.
If you absolutely need to use your computer, have no secondary computer and are unwilling to troubleshoot unforeseen consequences (that may render your computer unable to boot to the OS/Desktop) I would not upgrade. But I would also begin to think about the issue of having only that one computer that I depend on.
Hope for the best, prepare for the worst... happy computing.
Edited by AngryRaisin, 05 November 2013 - 03:27 AM.