How to inspire the bar takers into thinking about whats in store for them [50 years down the line]

So, it's a Friday, and when the office gets quiet, my mind ponders. It happens. What can I say...

Anyways, I've been noticing that there are a lot of elderly attorneys running around the courthouse and the city still in active practice. I'm talking 75 and older.

My question is what is holding these guys back from retiring?