I think that I am unlikely to hire a black lawyer/doctor for two reasons that have nothing to do (well, we'll see) with AA.
First, the one that has to do with AA, but not in the intended sense. There aren't, proportionally or otherwise, a whole lot of black lawyers and doctors out there. Even if I were to choose at random, I'm pretty sure the odds still point to white middle-aged (perhaps aging) man. I don't have the statistics, so feel free to correct me here.
The second reason is somewhat more complicated. It has to do with how I choose a doctor or lawyer. I think that it's hard to know who to choose among doctors and lawyers. My current doctor is not black, and I do not currently have a lawyer. If I move to a new area, I'm likely to choose a doctor based on two factors that will have some effect on their likelihood to be black.
The first is going to sound somewhat racist, but you can make your own decision there. Since working in nice suburbs generally is more desirable, particularly for a doctor, and since, in my experience in Philadelphia, doctors in the suburbs tend to have certain advantages over the city doctors, I'm likely to look for a doctor in that sort of area. In my experience (and again, no statistics), a greater proportion of black doctors tend to work in cities than in suburbs. If this is true, then I'm less likely to go to a black doctor.
The second factor I'd base my decision upon is the recommendations of friends that I trust in a given area. As a matter of fact, the vast majority of my friends are white (I think this is relatively common for someone from my background), and I suspect that for their own reasons, they are more likely to go to white doctors. If I ask them for recommendations, I'll probably get a white doctor. Should I get a black doctor, that's fine with me--if a friend recommends him, he is probably great. I just want a good doctor. This is the primary factor I'd consider probably, even though it's imperfect.
This has nothing to do with the thread.
Also, there are some arguments above that have become tired, but I'll throw some unreasoned positions at them:
1) legacy and URM - you can't hate one too much without hating the other.
2) Petitschoque - I really don't think AA was designed for people of your socio-economic status. Take it or leave it.
3) Daveman - I'm with you, for better or for worse.
4) Working - I worked between 25 and 35 hours per week during college. 10 is bs. Work is not necessary related to race.