Maybe not. . . .(If it's not broken then don't fix it)
Why change the oil in your car before the engine dies?
Why go to the doctor or dentist for a checkup?
Why do preventitive maintanance on anything?
And on and on and on.
One school of thought is to always "fix" things before they break.
If an organization enjoys "fire-fighting" and limited functionality they might as well never upgrade the operating system or any of the products because "they work fine today". . .