Ok, accept or deny God... but:
1. what was his/her childhood
2. what is her/his intelect, IQ etc.
3. what is her/his character (flegmatic, choleric, deep, on the surface, slow, fast thinking, long time to change or fast unstable changes from one thing to another...)
4. not everybody has the equal amount of information
5. not everybody has the equal amount of faith
--- as you can see, there are so many factors one cannot give to himself that even though we can say that God does not force us to believe and to love Him, He is still in a very good control of that