Finding Happiness: The Path to Contentment

With contentment, the shackles meticulously wrought by society to chain one down with pleasure are effortlessly taken off, allowing its wielders to free themselves from the tomb of this world, and allows them to appreciate the things that transcend it...

From the Womb of Affliction

The question, 'why does God take away everything' comes from the questioner's hugely flawed paradigm. It admits that this depleting, material world, that tends towards nothing, less than a drop in the ocean to the hereafter, limited and inherently cursed, "except whatever seeks the countenance of Allāh Almighty", can be 'everything'.