This is only my opinion. The only constant in life is change; through change comes observation, change cannot take place if there is no oberver as it is a dependant arising. Once an observer experiences change, the observer experiences the arisings of thoughts. Through development of thought comes understanding, and through understanding, experience. Overall, I believe the meaning of life to be the application of said experience to develop ones conscious awareness and overall being.
By Spirit Talks
P.S. I is on the YouTubes.