I think when people ask themselves this, it's in a selfish (I use that for lack of a better word) sense, they want to know what the meaning of their own life is not life in general or why the human race exists. I don't believe there IS a meaning to the human race other than survival, which is something that can be seen in any species, we just happen to be the "lucky" ones who think "Why am I here?".
So if you're asking is there a meaning to life in general, other than survival and various other instincts designed to ensure survival - no (not in my opinion anyway), otherwise life is what you make it.
So if you're asking is there a meaning to life in general, other than survival and various other instincts designed to ensure survival - no (not in my opinion anyway), otherwise life is what you make it.