Who needs theology?
Everyone is already doing theology. Because everyone has their own thoughts about God.
Theology is 'what we think about God'. It is a basic but apt definition I got from a book I read a few years back, "Who Needs Theology" by Stanley J. Grenz & Roger E. Olson (great book, easy, fun read). The definition stuck with me because it seems that getting into 'theology' is laid aside for being cool, or practical. But good theology is practical and very hip (Biblically speaking, you're down with God).
But it is what you think about God that makes all the difference. A.W. Tozer said "the first thing that comes to mind when you think about God say everything about you".
When you have good theology (correct thoughts about God), then you live the best life possible, as Jesus said, "I have come so that may have life and have it to the full", Jn 10:10.
It isn't enough to merely have thoughts or just any particular understanding about God, but to have the correct thoughts. Because it is your thoughts that shape how you will act, and acting through incorrect thoughts about God will lead you to be grounded with your feet firmly planted in mid-air. In other words, it isn't merely practice that makes perfect, it is practicing the RIGHT things that make perfect, says H. Hendricks.
Grace and peace,