There is nothing sadder than remembering two years later how much you paid for that 'hotrod' under your desk that is now slower than entry level systems...

When I add up what I paid for computer hardware over the year it's scary, good thing it made me more than I spent on it, I think of them as tools. But if it were for consumption only then I'd spend considerably less.

If you're a software developer you can justify such a rig as a tool and book it to expenses, for ordinary people, even the most avid of gamers it would most likely be overkill.

On another note, you tend to write much better software on a system several years old, and then to run it on modern hardware for production.

Slow machines tend to make programmers perform better :)