...I do not quite understand it, myself.

[exhaling a long sigh, there, with a shake of his head.]

To attach oneself to them knowing it will only cause you pain, in the end-- 'twould be far better to keep your distance. From what I know of them thus far, even if they did continue to exist in your time, naught would end any differently. They would still lead fleeting lives, still cause you the same hurt... as well as themselves.