A Generalization (page 7)

And that to me is God being selfish with His love toward us, just like my love for Sorrel is selfish. God would go to the greatest lengths to see that His love is eclipsing you.  And that He did, by sending His only Son to be sacrificed in our stead.  

(Logic piece #1)

I'm going to steal a bit of that "selfish" definition and most likely misuse it.  But Webster's Dictionary says that selfishness is, partly, being too concerned with one's own interests.

(Logic piece #2)

In terms of God with us, we are His interest.  This statement of God's interest being humanity is, in and of itself, a crazy-hard  concept to understand.  I mean, out of all of creation we are His interest.  We blow God off all the time, yet He still takes interest in us.  We disobey His commands.  We write Him off saying He doesn't exist.  We claim Him as Savior, ask forgiveness of our sins, and still continue to crawl back to our vomit like a dog re-devouring that which we just defecated which God just cleansed us of and then seek forgiveness again.  When will we get it?  Yet God still claims us as His desire.  And he does more than that, He takes pursuit of us:

"For the Son of man is not come to destroy men's lives, but to serve them."

"For the Son of man is come to seek and to save that which is lost." 

"For God sent not his Son into the world to condemn the world; but that the world through him might be saved."

God died for us.  That is His pursuit.  That is how He pursues.  It's as simple as that.  I really want to expound on this pursuit idea right now, but I know I'd be doing it no justice.  I would be defying it's simple by complicating the situation with all of my rhetoric, which would proceed to fail at explaining this one life changing moment.

God came.

For us.

To save [us].

Conclusion: God's love is selfish for us.