Do you believe "Qoran" is the word of GOD? How can you choose what suits you then?
Where does it say in the Quran that it's the Word Of God? (Kalamullah)
Show me if you're truthful!
It's again a legacy from "Medieval Scholars" where they're debating whether "Quran is created or not"..
And of course Quran is created.. and it's written by human, using human language.. it's as simple as that..
It's not holy at all....
Qoran does not have contradictions. GOD s commands are a sacred duty!. If you follow your conscience, then your conscience is your "idol". We must follow GOD Alone.
Where does it say in Quran or Gospel or Torah or Tao Te Ching or other books which (some) human considered to be holy that "You should not follow your conscience"

ON CONTRARY..
Within some books in the bible bundle there are description that God DOES talk through our conscience!
And so does in the Quran... people who often ignored his/her own conscience is said to have 'a disease in their own heart'..
And so far my conscience proved to be better than any others..
And the best part is my conscience never declare itself to be holy!!
People who do evil, know very well that they're doing bad deed.. as their conscience told them so...
Yet due to some reasons (greed,hatred,envy,ambition and others) they choose to disregard their own conscience... if they continue to ignore their own conscience, then it will grow darker and darker and darker..
As Quran said it best:
"Those who do bad deed do it for their own souls and those who do good deed do it for their own soul"...
Try It!
Pick any poor beggar on the street, strike him up with a baseball stick or whatever.. or if that's too brutal, steal his money! or mug him! If your conscience are still healthy you'll feel bad of what you did AND you do recognize that what you did is evil! Without consulting any 'holy books' or 'priest'!
Salam / Peace