I totally understand how kenichu feels because I am not going to study my J.D. for the sake of being a lawyer either. But some words of warning here: being interested in law is quite different from studying law as a profession; and this is the same as being interested in philosophy v.s. studying philosophy in the strict training. You may wonder why I want to study J.D. My reason is even more astonishing--I want to pursue a career in the academic legal research, which needs a J.D.as a foundation. We all have different paths, right? That's called diversity. However, if you are seriously thinking about law training in the strict sense, never give it up!
I would take a look at law schools'placement statistics. the percentage of the JD graduates go for non-legal sections in each of all the law schools is very small. You can get out of the legal professions if you try really hard. But it takes years to do that. that said, if you are not sure you want to be a lawyer or law academia, you have to think hard if it is worthy to do such an expensive and brain-burning degree.