This is indeed a serious difficulty for belief in God. However, in my opinion, it does not wipe out all the evidence on the other side. Some suffering is obviously attributable to human sin. Others argue that the suffering that we see is not as pointless as it appears, that it s a means to a greater good. Yes, we can magnify our concept of earthly parents, authority figures, creative artists, etc., to arrive at a picture of God.
Psychological factors can also make someone an atheist.
Obvious psychological factors working against belief in God are adolescent rejection of parental authority and desire to be exempted from moral principles.