If you don't hire juniors, you don't deserve seniors

Juniors are wonderful, but they make messes and are a training and maintenance burden on more experienced developers.

They really are like puppies, and if your org can't take care of them you shouldn't adopt one.

The flipside of this story is that companies often only hire junior developers for the lower cost.

Some companies 10-15 year old companies are composed 80-90% of junior developers, and that's a problem too.