While it's always hard to say "goodbye" to excellent glass my shift last year to the Nikon "Z" system warrants me to sell off some glass.
Yes I still have my D4S's and could still use this glass it's likely I won't.
I have replaced these Lens's with others in the Z system and have gotten used to their performance.
These are going to a good home (my son) and hopefully he can capture 10's of more 1000's of images with them like I did in the past.........