Should you do a PhD in Computer Science?

I came across these two great posts on why one should / should not do a PhD in Computer Science ....
An excerpt below.

Every year I am approached by students asking about grad school in Computer Science. I generally sit down with them for an hour or so and go over all of the details of why you should go, what the trade-offs are, where you should apply, what it takes to get in, and so forth. I figured it would be a good idea to write some of this advice up in a blog post so I can capture it in a more permanent form. 

http://matt-welsh.blogspot.nl/2010/09/so-you-want-to-go-to-grad-school.html

http://www.bailis.org/blog/ccc-post-why-am-i-in-graduate-school/

And an excellent visual of what happens after a successful PhD...
http://matt.might.net/articles/phd-school-in-pictures/