Have I told you how much I hate (by which I mean love) The Wrath of Khan?
Kirk begins the movie feeling old at age 52, since it seems like there’s never going to be enough time for him to experience everything he wants to get out of life. No matter what, it’s a race against time he can never win.
Kirk ends the movie feeling young at age 52, because once he realizes all those years he’ll have to spend without Spock, he understands that life is far longer to endure without the one he intended to share the rest of his with.