@Fido,
"If you say the world keeps on ticking without us you are saying it has intrinsic meaning..."
No: what I'm saying is the world (as mechanism) and everything in the world (as mechanism) will continue on whether or not you or me or anyone are around to witness it, comment on it, give it personal meaning.
If we're all gone and the tree keeps growing, where's the meaning?
Without one of us to witness the tree and 'judge' it (give it meaning) the tree is 'meaningless'. This is neither good or bad?just what is.
"Only life has meaning..."
No: only the human individual can bring subjective meaning to the world. The life of an amoeba is meaningless unless a human individual gives it meaning, and, even then, that meaning is only important to the human individual. The amoeba (a bit of biological autonoma) is oblivious to the human individual and the meaning he or she crafts.
"When I die the world dies... Grab a shovel and stay ready to bury yourself..."
No: when you die, the world -- as you experience it -- dies with you. I, however, should I outlive you, will continue to be in the world, live in the world.
How do I know this?
When my Grand-pop kicked: I stood in the funeral parlor, stared down at his embalmed carcass, and said 'bye'.
His death, your death, my death, etc. ends the world as we each experience it, but the world continues without us.
The mistake, again: to elevate your death with reality death. After you go, the rest of us will continue to screw, drink beer, squabble about politics, and philosophize. You just won't be around to witness, or participate, in the shenanigans.