I agree, much of the “system” does at first glance seem quite unfair. Yet, when we consider it more deeply, it becomes quite just…at least in my opinion.
I will grant you that it seems brutually unfair to kill an innocent animal because of our sins…yet that is precisly the point. Any person who has even a ray of light in their heart will feel terrrible that another living creature had to die because of their sinfulness. Which in turn helps people stay more on the path God has given.
Any person who rapes a woman and is not repentant, will not likely care if the animal dies, nor will they have made real atonement for their sins, nor would they be likely to even bother with atonement in the first place. Some people refuse to listen to their God given conscience.
Jesus’ death, when we stop to really think about it, causes our heart to break for the death and pain He endured for our sins. Hopefully, that heartbreak will guide us to repent and choose the ways of God…not of the world…and in all that is one of the keys to receiving eternal joy with our Lord in Heaven. Without repenetance, there is no forgiveness. Without forgiveness, there is no Heaven. Without Jesus, we die in our sins.
But would we really repent? A lot of people nowadays use birth control which according to the Church is gravely evil. They likely don’t feel bad about using birth control, and don’t even think about repenting.
But if suddenly the Church started killing people and saying that it’s precisely because of the use of birth control, then a lot of people would stop using it because they don’t want others to die.
But that doesn’t mean they would start thinking that it’s a sin, or would repent from using it!
But on the other hand if people were going to their deaths willingly because others were using birth control (the way God seems to have chosen to die), then people probably would not even stop using it.
Plus, the fact that God died doesn’t seem like a big deal because obviously God can’t die! And it was his choice to do it anyway, he could have made himself feel no pain at any time!