I haven't pirated a piece of software in probably close to 10 years now. There are a number of reasons that I no longer do it, and many of these reasons were mentioned in the article above.
More than anything, I don't find piracy necessary any longer as there is a plethora of perfectly suitable free alternatives available. With the exception of Microsoft Windows, Sony Vegas Movie Studio HD, and Acronis True Image I use no other productivity software that has a cost associated with it.
With regards to the big cost software titles like Adobe Photoshop...I've just determined that it's absolutely and totally overkill for my basic needs. Tools like Paint.net have far more functionality than i will ever use. Sure, I'm not like all of the cool kids using their pirated copies of Photoshop. And I tire of the argument, "but I might want to become a computer graphic artist and this means that I will need to know Photoshop". Well, it's that true, then save your money, pony up for the software and get your hands on educational experience.
I don't use/trust/endorse pirated software because i absolutely DO NOT TRUST that they haven't been tampered with either with malware/virsues, or worse yet...keyloggers, backdoor hacks, etc. Sure, you can say, i virus scanned it and it came back fine. But then again, how do you know that the coder didn't monkey around with core OS functionality to a point where the AV software isn't working properly anymore?
And there have been numerous times when you try to help somebody with some strange problem nobody has ever seen before. Then you find out they are running a hacked/preactivated pirated copy of the software. Get them to obtain a legit copy of the OS and 9 times out of 10, this wierd unexplainable problem simply goes away.
And finally, I have worked for the past 15 years now (almost) exclusively for commercial software vendors.