Irrespective of what figures are produced, I have seen the following.
The ones who `wither and die` are those who have based their entire existence on work.
When they finally decide to pull the pin, or are forced out(they are no longer an asset, they are a liability) they have no ability to adapt and in their mind their existence has no purpose.
Work is a journey to reach the destination of retirement, life is too short to waste, it serves no purpose to continue the journey when you have safely reached the destination.
All the best.