The Host, The Hosted

They're hideously annoying,
those voracious minuscule hunters
that seek out warm-blooded
creatures to perpetuate their own
species, burdening us with
vigilant awareness of their
predatory focus lest we also be
infected with dread pathogens
threatening our own existence,
while furthering that of the
world's malevolent species of
mosquitoes generously offering
us Yellow Fever, Dengue, Malaria,
West Nile and a nasty horde
of miseries impacting our lives.
In the great master plan of existence
we can be forgiven for questioning
the relevance of such creatures
in the greater and finer scheme of
life on our planet. As a major
stakeholder, should our opinion
not have been sought, the courtesy
of consultation to have been
undertaken, as per grand mistress
of existence-and-service provider to 
generally survival-grateful clients?