It is inevitable. There are no excuses which will prevent this enmity. Ye cannot serve God and mammon. A master is someone who demands total obedience and love. The injury of this enmity.
Worldliness promises to bring joy and fulfillment.
But in the end all you have left are the scars and a broken heart. It is not our environment that makes us worldly, it is our desires. The injustice of enmity. When we become friendly with the world it means that we become unfaithful to Christ. A king and his subjects.