Yeah, I am. It's sort of like stuff at stores where the price isn't listed: if you have to ask, a Ph. D. isn't for you.
When deciding, you don't see the ones who flunked, who killed themselves, who lost years of their life for the PhD and went to the private sector. Even then, most people won't tell you "yes I did the PhD and it sucked".. you can't say that even after years because you will appear weak or unskilled. Instead, people oft say "it was a great learning experience, etc etc".