Bismillah
O child what is even more important is that it DOES matter what we call Allah, it is the core of interest. U know why? because we are commanded as He CALLED Himslef in the Quran. Plus we are even commanded to observe the kind of relation He specified. Plus Allah Called Himself Allah, The Merciful (Arrhamand and many other Names and Attributes) Thus it is not necessary in order to instil the meaning of love to call Him father. Actually the Merciful bears more than this.
Child Names of Attributes and Allah does make much difference in our life, it even govern Allah's relation with those who dont believe in Him I mean believe in Allah The Only True Deity Who Is Worthy to worship.