The question at this point is still, "How are we trying to find satisfaction in life?" We could reword it, "How are we trying to find love, joy, and peace?" The Parable of the Prodigal Son touches on this issue.
Like the young man, we yearn for a feeling of well-being, peace, security, fun, and happiness. Also like him, we pursue after them, attempting to produce them in virtually every way but the Father's way. We, like him, experience the same empty, hollow, something-is-missing feelings.
Some may remember a popular song of a few decades ago sung by Peggy Lee titled "Is That All There Is?" The lyrics dealt with this very subject. The singer recounts having tried so many supposedly exciting and fulfilling things in life yet having found no lasting satisfaction in any of them. Following each experience, she concludes by asking the question, "Is that all there is?" The song clearly expresses that such a life is not truly fulfilling.
What is missing from such a life is the true purpose of life combined with the effort of fulfilling it by living the required way. The three offerings in Leviticus 1-3—the burnt, meal, and peace offerings—broadly define God's way of life: doing all things within the context of His purpose in love. As we have seen, I John 5:3 defines love as keeping the commandments, and the essence of love is sacrificial giving.
Though without the Spirit of God, some people (psychologists, for instance) have figured out much of this. The part they have not determined through observing humanity is the true purpose of life because God has not revealed it to them. They have, however, found that the essence of love is sacrifice and that doing the right things produces a sense of well-being.