If I delight in my children's affection towards me this much then I can only guess how much it makes God smile when we remember to say "I love you Daddy!" to Him. I bet He would love to hear it from us more often!! (Me included) God's love for us is simply amazing and He deserves our adoration!
"How great is the love the Father has lavished on us, that we should be called children of God! And that is what we are!"
1 John 3:1