While is post is quite an "easy target" to lay into, it's probably a good reminder that just becuase you get it doesn't mean you've made it. In fact, all of us applicants might not be as eager to apply if we knew the true loads of stress/politics/debt/hard work involved. Of course, if it was all bad there wouldn't be record numbers of applicants to become dentists. From my experience talking with dentists, their level of job satisfaction is very high. From talking to the dental students I've visited with at my interviews, they don't deny it's tough but they're all making it.
Good luck to everyone.