The problem with SaveYourself's post, is he presents his opinions as fact.
It is clear he believes optometry is about the worst job on earth (or at least on par with things like cash register operator, ice cream scooper, and toll booth operator - although I have yet to meet any doctor of any kind doing such jobs, and I'm sure any/all of these folks would make the jump to optometrist any day of the week). That is fine. Do I believe he is unfulfilled with optometry? Absolutely.
Is it possible some optometrists are unhappy with optometry? Absolutely.
Is it the case some optometrists have made very good careers in optometry? Absolutely.
So yes, optometry has it's problems, as SaveYourself has pointed out. But whether optometry is a "bad" job or not, is an opinion, not a fact.
Perhaps it's appropriate that SY acknowledge this, despite whatever "facts and statistics" he may have for us.