I did my PhD in comp sci because I absolutely loved solving CS problems and I wanted the respect a PhD brings. Yep, that second reason is as stupid as it sounds, but I couldn't really consider doing anything else until I'd climbed that mountain education put in front of me. If you can't stop yourself doing a PhD, then go ahead and do it quick. Its exactly as frustrating as this article makes out, and CS academia is as about as crap that unqualified rant made it sound a few days ago.

For the record I did my PhD in graphics, and while its a maths heavy field, so are so many others, it really depends on what kind of maths you're into.