See, for me the meaning of life has a lot to do with religion (I am religious, yes, but not the extent where I am a backless, camp christian who will not accept anyone elses oppinion and ram my beleifs down ya throat, I base it on my experience, and my own understanding).
As far as I am aware, We were created by God. I dont know how, (im not a creationist). Scientific evidence points towards the big bang, but the big question being what lies beyond that? My answer, God. but enough of that, that is indeed another question, probably already in this forum area.
I Beleive the reason for the creation of the species is twofold.
1. To befreind and worship God.I dont know why we were created for this purpose. Maybe God needed something to do, maybe the angels got bored, but all I know is that we are here. Sometimes an action doesnt need a reason, however I am not one to say that siply because I do not like the answer given to me, I dont beleive.
2.To act as stewards over this world until such time as to his return, by which a new heaven and earth are waiting.
there may be other reasons that have been kept from us, or that we cannot comprehend, however all of philosophy is based on our human ability of comprehension, and we can only comprehend in terms of our own dimension, so other reasons may exist outside of our comprehension.
But beyond that, I think we are here to live life to its fullest. Possesions and the such are merely trivial matter that help give comfort to our life in its passing. "We are merely aliens to this world in which we temporarily live" (Some verse in the bible).
We cant take anything with us into the void, and so there is no point stockpiling what you have rather than using it.
Other creatures lives i feel are to provide sustenance to others (food chain). Everything has a purpose in this world, even if we cannot see it, just like everything happens for a reason. or so i beleive...
Live life to the max, as we only have one... before the next world.