Thread:DJ MC CJ/@comment-34409076-20180120214624/@comment-4319402-20180120222759

Other then Michael Yarmush, most often leave due to their voices changing and not being able to voice a certain character anymore. Its mostly child actors though.

You also have to remember that these roles in the show aren't permanent for the young actors. They likely don't produce enough of an income for them to live off of it at that long term.

If Arthur was making the same amount of money as The Simpsons, things might be a little different.