There's only one reason to get a PhD!

Here's a very good quote from Deniel Lemire's blog:

There is only one reason to get a Ph.D. — because the career path you want to pursue requires it. Do not do it because you think it will make you feel important, because it will do the opposite. Do not do it because “there are a lot of things you could do with it”, because there are plenty of things you can do without it. Do not do it because you think it will be an intellectual adventure, because you’d do much better with a library card.