Scanning electron micrograph of a tooth.
Could you discern a tooth's function from this picture?
Sweet is the lore which Nature brings;
Our meddling intellect
Mis-shapes the beauteous forms of things:
We murder to dissect.
Assuming that Wordsworth is saying that by dissecting (to try and understand a thing) we also murder it (and it thereby becomes meaningless, dead); this applies to the meaning of life: by taking a close-up, microscopic, analytic view we intrinsically strip-out what it means; perhaps without realizing, we destroy even the potential and possibility for us to understand its meaning.
This is a matter of step-wise narrowing perspective, of ingraining this narrow perspective as a habit - of building-in the assumption that the smaller and more detailed the scope surveyed, the surer the knowledge derived.
Thus scientific knowledge (which excludes the divine) is seen as a path to exact validity; biology better than science;genetics than biology; fruit fly genetics than biology - then on-and-on through the ever-more-micro specializations of knock-out fly genetics, the behavioural investigation of knock-out fly genetics, and of particular types of genes... and so on-and-on until we reach modern science which is Balkanized into tens of thousands of autonomous technical disciplines - and has become merely useless, dishonest, bureaucratic careerism.
The same applies throughout all the multiplicity of endeavours - arts, literature, law, economics, theology, academia... pretty much everything.
And - having trained-and-trained ourselves to regard the world in such a fashion - then we complain that life has 'no meaning'!
Yet the meaning of life is only to be seen in the Big Picture.
This world has been set-up to provide the full range of experiences necessary for a human life conceptualized as spiritual learning aimed at higher divinity (i.e. theosis). This reality is only in the Big Picture - and not in the tiny time-slices of momentary life, nor in bits of the world regarded in isolation or one-at-a-time.
Reality is neither ecstasy nor suffering but both - both being necessary to enable us to grow towards becoming Sons and Daughters of God; and insofar as we experience or suppose that life is only one thing, or one half, or one short time - to that extent our knowledge is deficient, and our attitude is thwarting our ultimate goal.