It is difficult to believe that God is good because it becomes evident that God is solely responsible for suffering. A common rebuttal to the problem of evil involves God giving humans autonomy. I'm not talking about human malevolence here, however, but about illness/disease and our apparent lack of free will, which is the worst suffering.
Illness and Disease
If God was the great intelligence who orchestrated all these events, then he guided the first replication of molecules, and some of these molecules evolved to become nucleotides, they grouped together and became instruction manuals for our bodies, and proteins instructs molecules to act in a certain way. Proteins made neurotransmitters and these formed electro-chemical connections. We don't choose how our neurons group together to become systems, and we have no choice in how these systems affect our cognition, our emotions, and our behavior. These systems produce mental disorders, cognitive problems, and emotional malfunctions. We are preprogrammed to suffer, and God did the programming.
Consider the people many of us would consider "wicked" or "evil". Many of them are psychopaths and theists would consider their antisocial and violent behaviors to be "sinful". In the Christian framework, sin separates us from God, but this population has no choice but to "sin". They're preprogrammed not only to have empathy deficits and to be dishonest, but they're programmed with the inability to make emotional connections with others and feel the gnawing unending frustration of boredom/understimulation (for anyone with dopamine deficits, you have a taste of what this feels like). So not only are they preprogrammed to sin, they're preprogrammed to feel empty. That's suffering. Others are preprogrammed to be tormented by imaging things that aren't there, have fragmented thinking, and feel disconnected from reality. That's suffering. That's just one example of genetic disorder.
Think of mood disorders. There's also environmental conditions which fashions our neural system. Heightened stressors in our environment inevitably caused our malleable neural system to become anxious or depressed whether we're in danger or not. Now we have panic attacks, meltdowns.
Others are programmed to have a physical disorder. Take your pick on any video on this channel and you'll question God's goodness. Down syndrome, cystic fibrosis, They were programmed by God to suffer and die.
Some of these replicating molecules became viruses. Through natural selection, these molecules began to hijack cells to harm the body. There's no need to elaborate on the pain involved in viral infection. If God conducts or at least supervises evolutionary events.
2. Free will
How is God good if he is responsible for how our neural networks evolved? It's not just a psychopaths problem. We're preprogrammed to be malevolent. Think of it, all the trillions of neurons working together responding to stimuli, and the results are our thoughts and actions. We don't choose what we think, our thoughts just come out of nowhere. We respond without thinking, we exhibit tics and quirks which are out of our control. Whatever your response to this may be, how do you know that you had any choice to think that at all? Did you have any choice but to type a response? It was all the result of natural processes. So we don't choose what we think, therefore we don't choose how we act, so we engage with God the way we do and consciously watch our bodies perform without our control. Trapped in a VR system and forced to experience a horror movie. Why would a good God subject us to such torture? We're cognizant of the fact that we have no control. How is God good if he gives us the illusion of free will?
How does the existence of suffering from biological sources align with how God presents himself in the bible (abounding in steadfast love; giving Israel a choice)? If we don't have free will, this doesn't just put Gods goodness into question, it challenges the whole theistic framework itself!