Why does a mindless process build into itself instinct, and instinct to live? It just happens. No reason. Those who survive have instinct and those who do not survive lack the instinct. So what? How does that make anything good? Is it good to survive in a meaningless universe that does not care about you and won't when you serve your pointless, meaningless existence?
You see it clearly enough - "It just happens. No reason. Those who survive have instinct and those who do not survive lack the instinct."
Seeing is believing, right? How do you see the laws of logic? Are they physical? Without them, you could not make sense of anything.
You say, "It just happens - no reason," yet here you are supposedly making sense of it. Those who have instinct through with no reason why they should; they survive?
There is no need to invent the superfluous notion of 'good' If a species or a society thrives then is it because it has effective instincts, not because they ''possess goodness' or 'nearer to God'!
Unless there is a God there is no good. At least you have that right! BUT, you can't live without a moral right. If I steal your wallet, without God, you may not like it but what significance is your like or preference? Society 'thriving' is a matter of subjective opinion. Again you base thriving on those who survive. Kim Jong-un is thriving, meanwhile, a huge segment of his population is starving and suffering. Those IN POWER thrive while massive chunks of their populations suffer in many societies. That is the problem unless there is an objective measure - who determines thriving (those who survive by eliminating the opposition?). You, as a nihilist and secularist, do not have an objective standard or measure. Why should I believe what you are pedaling?
There is no reason, for unless there is a necessary Being or opinion means nothing (nihilistic) in the long-term.