This will be a quick one, because lunch's coming soon.
A few months ago someone asked me why I was a Christian and how different my outlook on life would be without God. For me, knowing that there was something bigger than this life was so important because things weren't an end in itself. I mean, we dream to impact people and change lives, leave a mark when we pass away, but these people we impact will pass away too, and there are six billion people in the world right now, and if once you die everything about you vanishes with a poof and everybody else vanishes with a poof and the whole world will one day die away, then what's the point of this endless cycle of creation to death? Basically, God gave me meaning in life - life here is merely a preparation for an eternity with Him. It doesn't matter if I'm a law student who dropped out in my final semester or a kid who never does well academically or a businessman who loses everything overnight. What is success but transient? Bigger things await, and the key is in how you take what God has given you to glorify Him, whether success or failure, big or small.
I saw it as a selfish reason, though - my relationship with God was something I needed to have meaning in life. What if I was just holding on to a piece of philosophy because I found comfort in it? What was the point?
Right now, when I question myself again, I realise I've had another way of looking at this for quite some time. Right now, God, to me, very obviously exists. I just can't deny it. Whether it's the God of the Christians or Muslims or Jews, it's a higher power in control, one that created everything and whom I can feel. Being a Christian, to me, doesn't simply mean acknowledging that God exists and believing in Jesus; it means wanting to have a relationship with this God. You could acknowledge that God exists and yet not be a Christian; believing doesn't mean wanting to take the time to cultivate a relationship. As a human being, as something with life, love, compassion and goodness wired into me - along with the capacity to sin and areas where I fall drastically short, I am a testimony of God's work. As a body with life - not just a mass of cells - I am proof that God exists. Being a Christian just means I want to be with Him.