Finding the meaning of life?

What do you think? What were we really meant to do in this world? Some of the ideas I have:

1. We are an alien experiment that went horribly wrong.

2. We are an alien video game developed like SIMS. Aliens get points whenever we do something right and when we do something wrong they lose points.

3. We don't exist !!

4. Our life has no meaning. We just get one chance here and that's it :-)

5. I don't have a clue what life means.

6. Who cares?

7. Wish I had a user's manual.

8. We are aliens and suffering from amnesia about what life is about.