We're talking about the same Kirk who falls for all kinds of women in all sorts of TOS episodes, yes?So I think fans can be forgiven for wondering why, if she's such a big deal to Kirk, we've never heard of her before.

From where art thou pulling that idea?But Antonia's not just another ex. The nature of the Nexus means this was the happiest Kirk had ever been, and thus Antonia is the woman who made him happiest.
GUINAN: It was like being inside joy. As if joy was something tangible... and you could wrap yourself in it like a blanket. And never in my entire life have I been as content.

), but his point is a valid one: Rick Berman admitted that when he was faced with the notion of bringing Kirk into the 24th century, he would not countenance any idea other than killing him off, because he thought it was too much of a game-changer to still have ol' James T. running around out there in Picard's century. No alternative ideas for Kirk's fate were considered by Berman, other than to kill him off.
)... Kirk helps Picard leave the nexus then Kirk fights soran as Picard disrupts the rocket. At the end we see Picard about to reconcile with Kirk after he's defeated soran on top the mountain but to Picards horror the nexus somehow claims Kirk as it swoops over the mountain (which obviously wouldn't make much sense other than just to get rid of Kirk without killing him)