Study In Contrasts

Each is dear beyond compare
but just for the sake of the challenge
let us briefly and with love and
affection enumerate the contrasts.
In their precociously early years
grandchildren strike us as 
miniature versions of ourselves
and they instinctively realize
that our purpose in their lives
is to entertain them. Puppies, 
in their gamboling formative years
entertain us. They are attentive
to us, fulfilling our needs in
exchange for love and theirs
has no limits and few constraints
content with our company as we
mature together. Grandchildren
know us as 'old', likely equalling
mental incapacity, incapable of
understanding their language
as they spurn the formality of
ours, along with our stone-age
musical preferences. They are
horrified to view us dodderers
dancing; our pups are intrigued by
such admirable shenanigans. No
longer in approaching the age of
consent do our grandchildren look
to us for entertainment, but to
endlessly fund their entertainment,
their advanced education, their
adult lives. Exasperated? Amused.