I'm an optometrist, and I love it. I have a regular schedule, I'm always on call for the local ER but rarely called, it's good pay and I have a life. My patients are typically not bleeding, vomiting, or dying. I help people in a very practical way, and usually have the gratification of an "instant fix" to the patient's problem. I also battle blindness and am part of the team that cares for chronic diseases like diabetes. There's nothing like having a patient come in who cannot see, for whatever reason, and he can see normally when he leaves my office.
You may ask "Why not ophthalmology?" It's true that optometrists are limited, we do not do surgery, but our jobs are essentially identical to ophthalmology other than surgery. Optometry school is a four year post-graduate doctorate degree. Ophthalmology requires four years of medical school, a year of internship, and three years of ophthalmology residency. By doing optometry, I saved four years of my life and can still do everything an ophthalmologist does except for surgery (which is fine with me).
If anyone is interested in more info, please feel free to PM me, I'd love to help. Cheers!