No telling how many other threads like this there have been; I probably started a bunch myself. But tastes change and new shows come along to kick some of the old favorites down a peg or two in your rankings.
There’s a current thread on The Shield that provides a case in point for me and there are probably others that do that for you.
In any case, list as many as ten of your all-time favorite shows. Maybe we can have a new poll if there’s enough interest.
Mine:
The Sopranos
The Wire
Justified
Breaking Bad
Homeland
The Shield
There are others that I would vote for if others mention them, but these are the for-sure ones for me.