I've always said that there is reality, and perception. Reality is. Perception is just our animal brains working to understand reality as we can conceive of it. Now the great mistake that many people make is thinking that their perception of reality is what reality is. But perception can be wrong, reality can't be.
So here is my perception of the world... We are a spinning rock with a staggering combination of factors that has led to life's easy flourishing. Time and the interactions of life, have allowed this easy flourishing to achieve the complexity that we see on this one planet. And all these complex animals, and plants, and microbes, are seeking only to continue their lives and procreate.
So the meaning of life is the continuation of life. Think about it... not just you, but all life. Ok so that's settled, lets focus on some more important matters, like how are we actually going to achieve global peace?