As a Christian I am a child of an eternal and infinite God and, as such, my own life is eternal and infinite. The "life" to which I think you're referring, Mitch, is just a prelude of sorts to that eternal life.
For those who believe that their current earthly existence is all there is, I don't know that there is any "point of life" other that whatever meaning they personally choose to ascribe to it. But for those who understand; who love the Lord and submit to His will, this time on earth is absolutely filled with purpose and with promise.
I pray that the Lord will open the eyes of those who have not yet discovered this. I am a Christian as well and I believe that God made our existential symbiotic relationship with the cosmos, also, God's creation which we are a part of. Thus, being part of this ether, or macrocosm, what we and our lives by our volition influences this existence that we are a part of as a whole. Each individual, by efforts of their conscious deeds affects all living creatures, human, flora and fauna whether we are aware of it or not. You don't have to be aware of your influence to have influence.