Here's a parallel comparison of the NIV, ESV, KJV, and the NKJV[1]. Note that the New King James even updated the phrase to be more accurate, and it now mirrors the other translations.
[1] http://www.biblegateway.com/passage/?search=1%20Timothy%206:...
Here's Clarke's commentary[3] as well:
> The love of money is the root of all evil - Perhaps it would be better to translate παντων των κακων, of all these evils; i.e. the evils enumerated above...
Anyway, sorry for the diversion from "hacker news" territory but I think it's interesting to know that not only is this widely-quoted verse not as widely applicable as is usually quoted ("money (or love of money) is the root of all evil"), nor is it even a general statement about love of money ("love of money is a root of all kinds of evil"), but it seems to be specifically just about the evils mentioned in the immediate context ("love of money is the root of all these evils").
[1] http://www.biblegateway.com/passage/?search=1%20Timothy%206:...
[2] http://aramaic-plain-english.scripturetext.com/1_timothy/6.h...
The root of all evil is an obsessive/addictive love of money. Any addiction is classically considered evil, but love of money is the most dangerous because it is the most formless and abstract.
Workaholism is pretty abstract, but at least you need to appear to be doing something. In our times as in all others, it is possible to chase money by doing nothing of value at all.
Traditionally speaking (i.e. in the historical context of the Bible a la Dante et al) the only way for something to be bad is to take something good and twist it out of it's shape, or pull it from it's right place.