Priority in saving lives based on age

According to this, would a small child also be preferable to a young man, say 25 years old, because he has more years left to live? Or would we say that the young man is preferable because he is at the peak of his strength and therefore more vital to society than a baby who is currently a burden on it.

In addition, are considerations such as reproductive potential – for example, if there are two people, one infertile and the other not, and all other parameters are the same, should the one who is not infertile be preferred?

Right now there is a person who is suffering and dangerous and needs to be saved
But more years of potential life while the world is debating and getting entangled in the question of population explosion
What is the virtue of the person with potential?

I don't know. If childhood is seen as preparation for life, then there is actually an advantage for someone who is already alive. He has already gone through the preparatory phase and arrived.
Childbearing potential can be a consideration.