Are you trying to give God the responsibility?

Who is fighting against what God has created? God Himself?

A current can be cut off at either end; by the provider or by the receiver. Scripture makes it clear that the current of life is cut off by the receiver - and here we are clearly speaking of life eternal which is the only life that really matters according to the Gospel.

According to the laws of the nature God has created there is no life without a connection with the Life Giver.

Satan wants you to think that eternal death is a punishment and he makes God an angry revenger.

Eternity will never happen until the whole universe understands that God is not an avenger but that the sinner has separated himself from life and therefore would be unhappy to live in the kingdom of Heaven.

Matthew 5:43-48.
5:43 Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
5:44 But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
5:45 That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.
5:46 For if ye love them which love you, what reward have ye? do not even the publicans the same?
5:47 And if ye salute your brethren only, what do ye more than others? do not even the publicans so?
5:48 Be ye therefore perfect, even as your Father which is in heaven is perfect.

If He wanted to, almighty God is able to perpetuate the sinner's life forever, right?

If so, then He could have prevented Christ's death if He wanted to. But Jesus definitely died. So that means that God did not want to prevent Christ's death.

The sacrificial offerings were ordained by God to be to man a perpetual reminder and a penitential acknowledgment of his sin and a confession of his faith in the promised Redeemer. They were intended to impress upon the fallen race the solemn truth that it was sin that caused death. {PP 68.1}

Christ demonstrated that sin causes death. Saving Jesus from death would have been a violation of His character.

We want the truth on every point. We want it unadulterated with error, and unpolluted by the maxims, customs, and opinions of the world. We want the truth with all its inconvenience. The acceptance of truth ever involves a cross. But Jesus gave his life a sacrifice for us, and shall we not give him our best affections, our holiest aspirations, our fullest service? Christ's yoke we must wear, Christ's burden we must lift; but the Majesty of heaven declares that his yoke is easy and his burden light. Shall we shun the self-denying part of religion? Shall we shun the self-sacrifice, and hesitate to give up the world with all its attractions? Shall we, for whom Christ has done so much, be hearers and not doers of his words? Shall we, by our listless, inactive lives, deny our faith, and make Jesus ashamed to call us his brethren? The ten commandments came from the highest authority, and are we obeying them? They are the will of God made known to man. It was Satan that commenced to war against them, and it is he that inspires men to keep up the warfare. {RH, August 25, 1885 par. 15}

Arnold, there are questions connected with the nature of God which require an almighty insight to answer. Are some of your questions approaching this old adage:

If God is almighty could He create a stone which is so heavy that He cannot lift it Himself?

Scripture teaches us that what is revealed about the nature of God is good for us to examine, but what isn´t is none of our business.