There was a
poll on here a few months ago in which KJV did slightly edge out the ESV (a little to my surprise...).
I think a lot has to do with how old you are. That might be an excellent element to put in a pole. I just turned 70 in November, and being older, the King James is in my blood. When I search for a Scripture, I still use the King James wording because that's what is in my mind.
But I'm going through the ESV for maybe the 10th time in a row. The first couple of times, I mumbled under my breath every time I opened it, "I really don't like this translation." That's many hundreds of mumblings.

. But I stopped the mumblings and am finally getting up to speed in it. Last week I decided to go through the King James one more time. It is so majestic and rich sounding. The KJV was made for preaching and reading aloud.
Read this verse out loud in both translations.
Isaiah 6:8 KJV
Also I heard the voice of the Lord, saying, Whom shall I send, and who will go for us? Then said I, Here am I; send me.
Isaiah 6:8 ESV
And I heard the voice of the Lord saying, “Whom shall I send, and who will go for us?” Then I said, “Here I am! Send me.”
Now compare verse 1 of Psalm 119 from the ASV to the ESV. (the ASV is kind of a younger brother to the KJV)
Psalms 119:1 ASV
Blessed are they that are perfect in the way, Who walk in the law of Jehovah.
Psalm 119:1 ESV
Blessed are those whose way is blameless, who walk in the law of the Lord!
Although I no longer rely on the King James as much as I used to, I still think it's going to be around and loved for a long time to come.