The word of God fascinates me, but is it just a fairy tale?
No.
As you say, the world is darkly evil and a high price had to be paid for its redemption. This price was paid 2000 years ago, but every man must come humbly before the Lord and receive it on an individaul basis. If a man rejects this mercy and grace offered to him by God, he will be held accountable for it.
Becoming a child of God is not offered as an alternative lifestyle. It is required of man by His Maker.
Romans 3:23
“For all have sinned, and come short of the glory of God;”
John 3:16
“For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.”
John 14:6
“Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.”
Revelation 3:20
“Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.”
Please do this right now. Come just as you are.