God or Father?

Romans 8:16

"16 The Spirit itself beareth witness with our spirit, that we are the children of God."

My thoughts this past couple weeks:  Hmmm... Heavenly Father is obviously God.  Jesus Christ is of the God head and also referred to as God in the scriptures.  Am I discounting their power and diety and amazingness by not calling them God instead of something so generic as "Father?"  I don't know which is better.  Which is most important to me?  What should I say?  Why was I taught to say what I say?

Yesterday I was driving to school.  I like to pray out loud sometimes.  I'd been trying out calling my Father in Heaven "God" more often than usual.  It had been a couple weeks now.  In my car as I looked at the beautiful sunrise, I started praying, and as I said "God" I suddenly felt something different.  Something I didn't love.  Suddenly the special tender feeling that comes with knowing an eternal principle I learned as a tiny child--I am a CHILD of God--had escaped as I spoke to the one who created me.  I felt like I had generalized His identity.  That my relationship wasn't close and intimate.  Like... I didn't feel like He was my... Father.  God IS powerful.  God IS almighty, creator of Heaven and Earth.  God can move mountains.  And God... is also a loving, living, tender Father.  A Father who listens.  Who cares.  Who understands.  Who is happy when I am happy, and sad when I am sad.  Who knows how to teach me, guide me, and walk beside me.  And,  I am His child.  He created man in His image and therefore... I know He lives and has a body of flesh and bone.  He is a literal being.  There is much more to God than diety.

God Himself said, "This is my work and my glory: to bring to pass the immortality and eternal life of man."  (Moses 1:39)  We are His priority!  We are the purpose of HIS work and being and existence.  That has Father written all over it.  :)

I don't have a staple answer to my question that must be right for everyone.  I really don't believe there is one.  But I know for me, whichever I decide to call Him, I feel so grateful and happy to have my own deep understanding of knowing the nature of God.  That God is in fact my loving, living Heavenly Father.