@Fido,
"What you clearly do not grasp is that being is meaning...No being, no meaning... So is the world going to keep on ticking???"
What you don't get: the world has no intrinsic meaning. Each of 'us' (human individuals) bring subjective meaning or meanings to the world, as individuals, but the world itself has no objective, intrinsic, meaning.
And: it doesn't need one.
Tomorrow: all humans kick off as result of Captain Trips. The world keeps right on ticking along without us. Cheetahs still run down antelopes, trees still fall in the forests, clouds roll on, and rain falls. All: meaningless, but still happening whether or not you, me, or anyone is here to witness it and impart meaning.
"How is that suppose to mean anything to anyone without a witness and someone to share with..."
See above.
"And we are the same, and worse, we have life in common with all life on the planet...I have a lot in common with sheep, and a lot in common with lions..."
Commonality is not synonymous with 'sameness'.
"...so, much as I like to think highly of myself, I am more accurate to the facts thinking lowly of mysellf...."
I suggest avoiding idealism in all forms: including thinking 'lowly' or 'highly' of one's self.
Seems to me: pragmatically one should think 'realistically' of one's self.
It's realistic to acknowledge the exceptional nature of the human individual (what else on the rock can do what you or I can do?).
It's not realistic to elevate the metaphor/pattern making power of the human individual to universe/reality/world-sustaining proportions.