Holy Books should be re written

I am a hindu and one of my friend is a christian, so during one of our conversations, i keep on saying few things that are happening with me and the things that i am doing. She keep on saying "its a big sin " according to their bible, following as a response to the things i did.

Later i said i dont believe in all these books, i said believe in god and not to believe in all these holy books. And asked her to follow her heart to judge whether a particular act or a thing is right or wrong according to the situation.She did not accept a bit of what i said.She says some things are wrong with out judging it .The reason she states is "Its against my holy book".

Definitely things will change according to situation, an innocent boy may kill some one in protecting himself from a thief or a threat.How can we blindly say that innocent man committed a crime.

If we see in the above example, according to my friend and her holy book logic its a crime ,but according to me its a brave thing .

What's the authenticity of these holy books now. Definitely i believe in god ,but i dont believe in those books written by a priest,preacher or a prophet.

1.As things keep on change in todays world ,i believe these holy rules should change.
When these books were written ,
2.Do we have this much population,
3. this much competition
4.did people die of hunger
5.whether there is this much disparity between rich and poor
6.Do they have an insight of internet changing the whole world

I say these holy book rules may hold good at the time they were written,
but they should be re written now or we need to educate our coming generations to think about logic of the situation rather than blindly following these books.

The law we follow today in the world will punish the culprit after following many witness and many sessions of argument.The law will be changed accordingly to situation.
Many new things were ammended in Law books after its first copy ,so whats wrong with the holy books ,why they are being the same.

I dont know how come these true followers of holy books eat non vegetarian items. They will have their own reason for that question.

Give damn to others feelings ,but dont hurt others physically.Just think twice or thrice according to situation before making a decision. And believe in the super natural(GOD) force which is driving us .

Believe in you and not the holy books.