You claim you know that there is no meaning involved in evolution.
I thought I'd pop in and remind all parties that it is easy to accidentally equivocate over terms such as meaning, purpose, function and reason since there is much overlap between the terms. As with so many discussions of this nature it might be a good idea to get it straight what you mean. By meaning do we mean 'spiritual or personal significance' or 'goal' or 'something intended to be conveyed'.
Because you know there is no god and because you assume mutations are completely random.
Nobody is assuming mutations are 'completely random' in the sense that would mean 'We have to believe determinism is false'. Once again, it is easy to equivocate on the terms here. Random is meant 'random with respect to the fitness of the organism'. The mutations are caused by chance events in the complex biochemistry of DNA replication. Those events have their own causes, and so on. Because of the huge numbers, the small scales and the number of possible variables we consider them essentially unpredictable. This is the sense in which mutations are named 'random'. Not because they have no deterministic basis. It is akin to chaos, rather than mathematically random.
I am not telling anyone what they think. I merely said that life is objectively meaningless according to atheism. And I challenge each and everyone to produce a single objective purpose.
Hmm, and it is objectively meaningless according to many forms of theism. There is certainly an objective reason as to why we are here. We are here because our parents had sex and their two genomes united in a suitable environment and phenotypic development began and the body grew into what we have today.
There is certainly an objective reason as to why our parents had sex and so on and so forth. Is there some objective purpose or meaning above and beyond all of this? You can believe that God exists and believe that there is no objective meaning above and beyond this. You can believe in God and believe that there is some meaning beyond this.
Of course, you could also believe in a superGod that created God, in which case you might also believe there is some meaning for God giving us the meaning we have and so on and so forth.
But here is an objective, atheistic meaning above and beyond cause and effect for as to why we are here:
A scientist in another universe set things in motion in this universe for the purposes of entertainment in a massive 'reality show'. This requires no deities or supernatural entities at all - but it is an objective purpose for our being brought into existence. I believe that meets your atheistic objective purpose standards. Still, moving back to the equivocation and definition problem it is difficult to know exactly what you mean.
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