Darwin and the controversy of the law of nature

Everyone is familiar with the Darwin's theory - "The species which survived were not necessarily the most intelligent, but the most adaptable". The word intelligence is debatable here but thats not the scope of this blog. The question is do you really want to live like a cockroach just because it is highly adaptable? The question is do you spend all your efforts to change things which needs to be changed or just change yourself to be part of it? Darwin's theory is correct and is the rule of the nature, but sorry I disagree in adopting it.