There are a lot of reasons why I became a Christian but the main one which drove me above all the rest is that I recognize that we are living in a material world that could only have gotten here as a result of the will, actions and purpose of a creator. In short, I recognize and acknowledge that there is a creator God who is powerful enough and intelligent enough to bring about what we can see in the observable universe. It's a big and complex universe we live in so the creator has to be bigger and more powerful than our universe and He has to possess the intelligence to accomplish it. With this acknowledgement of a creator naturally comes the realization that there was intent and purpose connected to this creation. In short, what does our creator expect out of His creation? The writer of Revelation penned this in chapter 4:11, "...thou hast created all things, and for thy pleasure they are and were created." Isaiah wrote in 43:7, "Even every one that is called by my name: for I have created him for my glory, I have formed him; yea, I have made him." Yes God has expectations of His creation and according to Isaiah's inspired words, mankind figures prominently in God's purpose.
Ralph P. Martin wrote that Paul's theology can be summarized in the concept of reconciliation. Getting back to God. David remind us that God created us for a purpose, to live with him, and he has overcome the sin which claimed us and brought us back to himself.