When I think about working with children I feel inspired to do C&A psychiatry, but when I think of working with bad parents I feel turned off from it. From people who are pursuing or did C&A, how do you get past the difficult parent part?
The majority of the time, seeing the situation as "bad parenting" is a woefully inadequate assessment of the situation. The fellowship helps you understand that better, if you're a thoughtful person. Often the situation is one of incompatibility between a child and a family. You'll see tons of families who have one "bad kid" and several "okay kids." They didn't suddenly become massively different parents for that one. The unfairness of genetics is often such that the neurocircuitry of the parent and the neurocircuitry of the child express the same vulnerabilities, and those are often incompatible.
I'd recommend Judith Warner's "We've Got Issues" and Ross Greene's "The Explosive Child" (though they have somewhat different takes on child psychiatry) as being a really nice place to get a feel for the field.
Doesn't mean there aren't "bad parents," but no more than there are just "bad people" in the rest of psychiatry, medicine, on your street, etc. And if that's the case (such as in so many trauma cases), the kid is still suffering and needs an advocate. That can be you. I'm not sure what higher calling there is than that.
As for "medicating bad behavior," again, if that's the way you see it, then child isn't for you. It also shows a massive misunderstanding of what's going on. A kid is suffering. A kid is suffering because he has lagging skills that are inadequate to meet the demands of his life, and there are countless episodes of incompatibility. The world isn't going to stop having expectations because a kid has lagging skills. Medications are used when a) a clear illness is present for which medication is an established treatment, or b) a clear dysfunction and suffering exists, of which one of several ways of ameliorating is using medication with responsible monitoring and discussion of risks and benefits. Medications aren't always ideal, but they are consistent, and given our political culture that does not particularly support families, often one of the best options.
Child psychiatry is awesome. Child psychiatrists tend to be a much cooler group of people than general psychiatrists, though psychiatrists in general are a pretty cool group most of the time. The worst thing that happens is that you lose some income. You can always go back to treating adults or treating a mix of ages if the issues inherent to child psychiatry become overwhelming. And even if you do, the added perspective on development will make you a much better adult psychiatrist than you might otherwise have been.
If it feels good, do it. If it doesn't, don't. It's one of many great ways to spend a life.