See the Mouse Utopia blog for the story so far: http://mouseutopia.blogspot.co.uk
If Mouse Utopian conditions lead to a reduced adaptiveness for humans - reduced intelligence, impaired instincts, damage to sexual and behavioural functionality, mass illness and premature death; then is this likely to change the spiritual condition of Man?
Mouse Utopia would be expected to lead to a collapse of the economy, and a massive (talking billions*) decline in population, and all sorts of other material disasters - but from a Christian perspective, how might things play-out?
My guess would be that spiritually things would overall improve, not decline; since Christian faith does not need high intelligence, fitness, adaptiveness, long life, or anything else. Young children, the simple minded, the crippled and sick - such persons have been and can be Christians as good as any - and better than most.
A further factor to consider is that here and now, in the West - two hundred years after the onset of the industrial revolution, and beneficiaries of decades of peace, comfort, prosperity and longevity - we have the least spiritual and most systematically evil society in the history of the world.
Here and now we dwell in a society so evil that it not only fails to recognise the reality-of, or distinguish-between, Good and evil but actually inverts them.
A society which mobilises the state, educational systems, and the mass media to advocate more and new inversions of Good; a society that creates official propaganda for inversions of truth, beauty and virtue; laws to implement inversion, which bribes and coerces the mass population into acknowledging inversion.
And this modern world was the product of genius - the genius of European peoples who discovered, devised, invented and made the theories, artifacts and systems upon which the modern anti-Good world depends. And genius depends on very high intelligence in combination with a specifically adaptive Endogenous Personality characterised by powerful inner motivation and intuition:
So Mouse Utopia will certainly bring-down modernity, and with it the expansion of the world population from one to seven billion. The magnitude of death and pain is appalling to contemplate.
But spiritually, ultimately, such a collapse might be the savour of the Western peoples - and certainly seems more hope-full than continuing on the present course towards ever-more complete and extreme moral and spiritual corruption.