[quote=@whizzball1]
<Snipped quote by Host>

-Soren- *opens his mouth, and then closes it, thinking* Why does he attach importance to those things? Is it only for some benefit of his own--as in, she is useful to him--or does he care in order that he might benefit her without necessarily benefiting himself?
[/quote]

Does anybody truly do anything unselfishly? Even if the answer to that is yes, Serenity is very advantageous to Luke, so I cannot fairly answer the second question, since her simply being alive is advantageous to him.