[. . .] regarding proof of God...the only experience that validates the Fatherhood of God is the experience of being a child of God. To someone who has experienced this no proof is necessary and to someone who has not experienced it no proof is possible. If it wasn't so then there would be no use for faith in Gods plan for life on earth.

consider that even the observational facts of science are experienced and filtered thru the mind before they are made real to another mind.

If you could abolish all talk and knowledge of God and divinity from the earth the concept would soon reappear due to the actions of the indwelling spirit of God within us all. Like water, the spirit is constantly seeking it's own level...seeking to return from whence it came.

Why are there non-believers if God wants us to believe?

If God was never mentioned, would man have invented the God concept to explain the unexplainable?

From this second round of replies, I'm gathering that you guys are under the assumption that if someone doesn't already believe in God, that they never will. At least not by the persuasion of other alone. But this was the main point of my question: Why are there non-believers if God wants us to believe?

I heard it, it resonated with my brain, then in reflection of this resonance, I chose to label it my favorite. The only choice I made there was thinking about what the word favorite means and deciding which genre best fits it.

[. . .]the concept of free will doesn't define the range of potential choices...it only says that the choice was made freely by you alone.

(58.2) 4:3.4 God repents of nothing he has ever done, now does, or ever will do. He is all-wise as well as all-powerful. Man’s wisdom grows out of the trials and errors of human experience; God’s wisdom consists in the unqualified perfection of his infinite universe insight, and this divine foreknowledge effectively directs the creative free will.

(614.7) 54:2.2 Every creature of every evolving universe who aspires to do the Father’s will is destined to become the partner of the time-space Creators in this magnificent adventure of experiential perfection attainment. Were this not true, the Father would have hardly endowed such creatures with creative free will, neither would he indwell them, actually go into partnership with them by means of his own spirit.

48:6.5 (552.3) On the mansion worlds the seraphic evangels will help you to choose wisely among the optional routes to Edentia, Salvington, Uversa, and Havona. If there are a number of equally advisable routes, these will be put before you, and you will be permitted to select the one that most appeals to you. These seraphim then make recommendations to the four and twenty advisers on Jerusem concerning that course which would be most advantageous for each ascending soul.

48:6.6 (552.4) You are not given unrestricted choice as to your future course; but you may choose within the limits of that which the transition ministers and their superiors wisely determine to be most suitable for your future spirit attainment. The spirit world is governed on the principle of respecting your freewill choice provided the course you may choose is not detrimental to you or injurious to your fellows.

Why are there non-believers if God wants us to believe?

Free will-
I personally can't subscribe to the concept of free will. The ability to actually author our own thoughts, when you really think about it, would require some kind of magical power rivaling that which is generally attributed to god; omniscience. I don't decide what thoughts pop into my head, they just pop in there. ( Ghostbusters reference!) Say I ask you to think of a city. Any city. First of all, you are limited to the names of cities that you know of. That list is then limited to the names of cities that you can remember. Then here's where free will really falls apart. When I asked you to think of the name of a city, I bet a list of 2-5 cities simply appeared in your head. Out of all the cities you know and remember, why these 3? When did you decide for them to come to the surface of your consciousness? I think if you take a hard honest look at that process, you'll find that you had no freedom here, they simply arrived within your consciousness. Now you might say, well that's just how our brains work, we are limited to the capacity of our brains and we still had the freedom to choose which of those 3. But then again, did you really? There are a million factors that would cause you to choose one, and if you look at each of those factors, you will see there is as little freedom in each of those factors as there was in choosing the original list of contenders. Another though experiment: Consider your favorite genre of music as well as your least favorite genre of music. For me, my favorite would be swing-jazz, while my least favorite is modern pop country. Do you or I have the freedom to choose to reverse these affinities? I can't choose for country to be my favorite while choosing to hate jazz. This is impossible. I could PRETEND that I dislike jazz. I could stop listening to it, and instead listen to country and claim it is my favorite. But deep down, I really prefer jazz and cannot change this.