In a Slashdot discussion, IgnoramusMaximus put it nicely: click the link above to read the full comment, the replies; and other discussions.
You see, the whole idea of "law" was supposed to be for a code to bind a society together by making every member capable of some action affecting others to follow a simple set of clear rules, which, again by definition, were to be simple enough to be memorized in entirety by everyone. That is why Hammurabi had the thing carved in stone and placed at public squares, so that "ignorance of the law" was not an excuse for breaking it.
The moment however when the "law" becomes so complicated and ambiguous that it requires someone to "interpret it" (i.e. twist it to whatever whim of the moment is fanciful) the whole concept breaks. In short a society which needs lawyers, is by definition lawless, as "law" has morphed from the universal code of conduct to a byzantine, convoluted, religious scripture which requires a career priesthood to worship, massage, "interpret" and twist to the needs of whatever power caste is running the place at the time. The average denizen then simply becomes hapless prey for this caste of parasites with no recourse but to prostate himself/herself before the high-priests of "law" who hold the strings of the citizen's life or death in their hands.
Ultimately, in a country of lawyers, by lawyers and for lawyers, the laws become such a sick caricature of the original idea that no one knows the "law" to its full extent, including all of its priests. One can test this simple supposition by simply asking any one of them to recite the "law" of the land from memory. In the USA, not only no lawyer, judge or politician could do it (even though the "law" is supposedly binding everyone and its ignorance is "no excuse") but they would not be able to tell you what the current definitive law is at all, even when given the ability to use books and databases to do it, as the code has become so byzantine that its successive layers upon layers of modifications and arcane religious language are so completely unmanageable that pretty much any "legal" decision needs an arbitrary "interpretation" by a cabal of priests.
And this is why the majority of people instinctively hates lawyers, as even if most people cannot vocalize it, an average person's intrinsic moral compass is able to detect that something is profoundly wrong with the very idea of a lawyer.