In my opinion the main point is that Christianity is our religion and from our childhood our parents train us to it. They make us believe in God, to observe our traditions and customs. Iconography demands to believe that God really exists. A person has his own understanding and imagination of things and the task to express the shape of God shows everyone`s attitude to the religion and essence of the person.

"An icon is not only the type of Christian Art, but also the church's first language". Regarding an icon as a means of explaining the divine mystery of the church, we have to admit that icons have a much deeper meaning than simply depicting Saints or being the objects of worship.
This may also help us understand why icons appeared. Something may appear only then when the lack of this "something" causes certain discomfort. So, necessity results in inventions. As far as icons are concerned, maybe they appeared under the necessities of Church to explain its divine mystery. That would be sensible!

I have already spoken about icons as God's gifts. The icon is a sacred object that can influence our spiritual side, improving us and helping us to choose a right way. Having created icons, people presented themselves a holy gift: the gift that can bring only happiness to one's heart.

I have never come across the idea that icons are the language of the church and (shame on me) it's like a revelation to me. I always thought of the icons as the projection of the human understanding of God and divine deeds. But now I come close to the real message of any icon - to stir the same feelings as the icon radiates, to empathize, to confess or to fill your heart with joy.

I think, if it were just a projection of the human understanding of God and divine deeds, there wouldn't be canons of iconography. Icons are multifunctional.