Don't get me wrong, public defense is a very commendable job, but it is definitely not what many aspiring law school undergrads first think of. The glitz and glamor of the big firm/big paying jobs after law school is very attractive and will motivate many people.
That certainly must be the perception of an undergrad...I thought so too when I was there.
Then I got married, realized I wanted a family and considering I love the courtroom atmosphere, the "glitz and glam" faded pretty quickly. Law school can open your eyes.
With 2000 billable hour minimums (no one gets made partner doing the minimum) and the prospect of getting to first chair a real trial 10 years after law school graduation, I don't think the big firms sound so attractive anymore.
I didn't want to be 35, have a 10 year old kid I've never seen, and just be gearing up for my
first trial where I get to represent a faceless corporation...