Well, this may sound a bit funny, but as much as I love Psychiatry & would pick it all over again, a part of me wonders what would've happened if I chose dentistry.
I have no real interest in it other than that dentists work a lot with materials that are needed for model building--a hobby of mine. I could've become a much better modeler had I gone to dental school! E.g I'd be able to cast, sculpt, glue etc much better!
Anyways, and this may be a prejudical statement that I invite people to correct because I'm basing this on what I hear, not what I truly know....
I hear that dental school is easier than medical school. Dentists earn almost as much as docs & I hear the school is much less intense. I'm in no way, shape or form trying to knock dentists. IMHO, so long as someone enjoys their work & are proud of it, who cares what others think? I also hear the hours are good & there's no residency type of training where they work you 80 hrs a week with call duty.
Aside from difficulty, you have to want to enjoy what you're doing. Medschool & residency are not worth it if you don't want to be a practicing physician & are doing it for other reasons such as money. Its just too difficult & time consuming, and not very profitable. You'll have to work for about 14 years before you earn enough back to pay off your loans.
This is ultimately something you're going to have to decide on your own but factor in if you will enjoy the work & will it give you enough pay to live on what you feel is comfortable.