I'm one of those people who, at one point, had trouble deciding which path to take (DVM vs. MD) so obviously I don't think it should be that difficult to understand why someone may be attracted to both professions. Actually, I find it interesting when a pre-vet tells me he/she never considered going to the 'other' side, as there are many parallels between human and vet med.
Both require the practitioner to have:
-a love of applied science and medicine
-empathy for patients and a sincere desire to assist them
-a strong affinity for an understanding of biological systems and disease processes
-etc...
And you'd better like dealing with people as a vet too, since, as the adage goes, your patients (usually) won't walk into the clinic by themselves.
It was predominantly the ethics of both professions that had me leaning toward human medicine. If you really look into the ethical framework of veterinary medicine (which I'm sure you have), it can be mind boggling. People eat some animals, perform painful experiments on others, spend thousands of dollars on a new hip for their pet, etc
And how you act as a veterinarian differs based upon the circumstances of the situation.
Even though some people have more money, power, etc... than others, at the end of the day your job as an MD is, in comparison, relatively clear- try your best not to let your patient die (extraordinary circumstances not withstanding).
Obviously veterinary medicine has equally compelling positive attributes which I'm sure I don't need to go into; I just wanted to make the point that for someone who loves both animals and people, and has a great interest in the science of medicine, it's not necessarily an easy choice.
It was only after volunteering in a human transplant unit a couple years ago that I finally felt sure I was more drawn toward veterinary than human medicine- I found I just didn't have the same feeling working there as I did my vet hospitals- the passion was lacking.
In short, you don't forsake your prospects in one profession just for evidencing an interest in another. However, I do agree that, if you take the time to think about where you envision yourself in 20 years, the answer will eventually make itself clear.
But hey, nothing wrong with an MD/DVM! I'd love to bring my cat with me to the doctor 🙂
Andrew