Windows Update has always been a great offer from Microsoft. You can just click a shortcut and install teh latest drivers that have been accepted by Microsoft, for your computer. Along with driver updates, you also get software patches and security patches. Many of these updates could very well be needed. And with lots of Microsoft software, You can not use the software without having automatic updates turned on.
The issues I have, is that your computer is constantly checking for update, or on set specific dates you have automatic updates configured to always check. Usually found control panel, but labeled differently depending on what version of windows you are using. If you have an internet provider with a limited monthly bandwidth, automatic updates could cause some issues. I have been using windows since 3.11, and since updates came about, I found that my computers always run their best and their fastest when I do a fresh install, turn off automatic updates and personally go to all manufacturer sites and get the drivers myself. So far the only operating system service pack I have ever used that worked well, was xp service 3. The first two patches nearly left my computers (at the times) crawling and needing upgrades just to continue being useable.
I don’t believe that every security patch scare is for the reason they claim. Otherwise they would fully announce that windows genuine advantage, actually gave you a genuine advantage.
If I can’t use software I paid for, with updates turned off, then I will not buy any products form that provider again. Easier explained, I have wine installed to my Linux partition so I can run some tools along side of some of the Linux tools I have, and well, without some of what the software may be looking for, it will not run.
I claim that from here on out, I will never buy software that forces me to turn on automatic updates. I enjoy my computer running at full speed. You can do what ever you feel safe with.