If any man love the world, the love of the Father is not in him. For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world. It is that simple. We are so blessed to have an opportunity to do the will of God. It only makes sense to turn away from that which is temporary and emphasize that which is eternal.
Salvation is forever.
The world is going to hell, and most Christians are doing nothing to make a difference. In the Book of Revelation, Jesus warned of a time in the last days, when believers would falter and fail. Nevertheless, I have some what against thee, because thou hast left thy first love. The above is a sobering message. They have left their first love.