Clearly, it isn't the only explanation.
God doesn't even exist to make us feel more comfortable.
God exists.
What is underconsideration is how God relates to humanity and exercises God's sovereignty.
If only we could. That is part of what is at issue. Does humanity have the ability to atone for its own sin or, must God atone on our behalf?
Where Christianity argues for Salvation by Grace alone it acknowledges that humanity has completely and utterly lost its ability to atone for its sin. Where Christianity argues for Participatory Salvation by works it acknowledges that humanity retains control over its own salvation.
Or God judges. That is the freedom afforded to God via God's sovereignty.
It can be right when the election of individuals is left up to God's freedom to choose rather than insisting that there is some way that election can be earned.
In the Garden before the fall Adam and Eve are not morally corrupted. They do, as a matter of fact have the freedom to choose between obedience (continued life) or disobedience (death). They chose disobedience (death). That effectively kills the freedom to good humanity enjoyed. Once destroyed there is no longer freedom to good.
God doesn't tempt Adam and Eve.
The serpent tempted Adam and Eve.
Both Adam and Eve remembered the instruction given by God, they were aware of the consequences. Once chosen, they cannot unchoose.
There was no necessity for eating of the tree. There was plenty of food available for them. They fell prey to their own vanity and because of that they disregarded the clear instruction that they knew.
In their defence Adam blamed God and the Eve. Eve blamed the serpent. None took responsibility for their own deeds or actions or motives.
That dog won't hunt.
