We were born in the planet earth , we are humans , and we die like any other animal we are not any more special than them , the only real advantage we have is the evolution..
That's it , we are not the only ones looking for the same answer..
I'm sure there are a lot of other planets out there with life and they also look for explanations , and to see how they came to be what they are...
Some may have already found the answers , some may be less developed than us , we will never really know , maybe the future generations , will be able to find the answer for this question , but now just relax and live your life , and remember , you are what you are , from the universe we came and when we die our body will come back to the universe, there's no after life onle conscience we have while alive...
Live while you are alive...