[babby]

While I mostly agree with you, one could also argue that there is a meaning to life and that is not to be happy but is to instead do all that one can do to further human survival (or whatever we end up turning into). One person providing some obscure service eventually bubbles up to the guys colonizing other worlds.

There is a default meaning to our life, and it's merely survival. I believe there is a balance between giving into ones emotions and not; doing many great and small things which accumulate into mattering in the grand scheme of it all, determining ones worth.

You're lying on your death bed and you ask yourself; how meaningful were my actions to this universe?

[codonaut]

One could argue that survival is the meaning of life, just as one could argue that eating cake is the meaning of life. Just because we have a massive instinctual desire to survive doesn't necessarily mean that it is the default meaning of life.