This isn't a matter of being right or wrong, but I will just make my case and let folks do as they please.
I can think of several BIG infections in the last couple years that have sucked not only production time, but confidential information from hundreds of thousands of
computer systems. The vast number of the infections/breaches could have been prevented by simply applying the security patches available in a timely manner.
I am all for testing patches and security updates before applying them. This is a huge part of good network administration. Unfortunately, most folks don't have the resources to do said testing and others forgo applying any updates altogether because they forget. In a situation of all or none, personally, I choose all. I can always uninstall an update I don't like.
For those that are diligent enough to manually install updates on a safe schedule, good on ya! But in my experience, not everyone is that diligent. To be honest, a good majority of
computer users aren't even sure about what updates to install and feel they may be being tricked when their system tells them that there are updates that are important. What ends up happening? None of the security patches ever get installed.
This is not a black and white situation for everyone. This is an instance where an update caused a problem, I agree. But I can also count numerous times that not applying an update caused an issue, a serious issue. Is everyone going to need every update? Nope. But I would rather have it and not need it than need it and not have it. I will take my lumps every few years in the name of security.
Personally, I am a very low-risk user. I may never need a single patch or security update. I can't even remember the last time my security software notified me of any problems whatsoever. I could probably get away with no updates at all and no security software and have very few issues. But, not everyone has the same
computer and Internet practices. I swear, there are some folks who seem to catch every infection known to man. They are ACTIVE members of every social networking website, spread every malicious email, visit every porn and gambling website, as well as downloading every "free" file on the Internet. You know what, they may work for you. Evaluate your risk tolerance carefully.
This is only my opinion, and your mileage may vary.
