I'm always amazed at how distorted most folks' notions are regarding the practice of law. The bar exam is a joke, and serves little more than a barrier to entry for those unwilling to spend a bit of time studying. It has nothing to do with practicing law and certainly doesn't indicate who will or won't be a good attorney . Wrote memorization of the law just has nothing to do with much of anything, but the layperson has been taught to believe this by television (or perhaps outdated stories of former political leaders).
A legal education, in my opinion, holds as much or more value as any other form of education you can get. In the U.S., of course, it is a terminal degree and rightfully so. At a good law school, you will experience boot camp for the brain - being taken down to the studs and rebuilding the very way you approach problems and the world in general. That someone would assume this is a waste of time so long as you can pass a bar exam is laughable, and completely backwards. As you know, many with law degrees never practice law at all, but take that education and apply it elsewhere to great effect.
The handful of states that will let you sit for the bar exam without a degree still require an apprenticeship, and unless your goal is to be a low stakes litigator it's difficult to see why anyone would take this route. You could become a passable GP without a medical degree about as easily as you could become a low rent litigator, but why would anyone willingly do either? Those are places you end up, typically, not roles many aspire to.