I agree with what Coroner said. Pathology is less competitive, but it's not the only field that's "less competitive", and thus not the only field you will see foreigners in (just an example -- where I went to med school and did rotations in internal medicine, the place was swarming with IMGs).
My medical school provided almost NO exposure to pathology as a specialty. It has to occur to you, on your own, that you might like it, and then you must pursue it in order to really find out for sure. I think most students get hung up on the glorified, sexy images of being a surgeon, etc. (as stated above), so they never think to look beyond that. I would definitely bet that more people would be interested in pathology if only they had proper exposure to it (i.e., met some really dynamic pathologists who are awesome teachers and have passion for their specialty -- I am extremely lucky that I met some!).
The other thing to keep in mind is supply and demand. We simply don't need as many pathologists as we do internists, pediatricians, and surgeons. Pathology is a smaller field to begin with.
As for the patient care thing, that is another factor obviously. I still struggle a little bit with the idea of not having patients express their appreciation to me. I'm currently doing an elective in radiation oncology, and I'll have to admit, it is nice meeting some of the patients -- they can be really friendly and charming, and make you feel good about yourself. But I should know that I'm a good person, and not need constant external validation. I also have to remind myself of the thousand other reasons I ultimately won't miss patient care. As a pathologist, I can still put to use all the things I learned in medical school about being sensitive and a good listener... I'll still be surrounded by people all the time (especially during residency / in an academic setting). I'll have a whole lifetime of developing relationships and being a good person (the "good doctor")! Long story short, there's no reason the "people skills" I worked on in med school will go to waste, not if I let them.
Just some of my thoughts.