Define perfection

Define perfection.

Is it possible?
When will it ever be
A perfect state?
Animals actually living in harmony.
No symbiotic relations,
No prey and predatory,
No killing of the other.
A world with peace.
A world without sin.

Is it plausible?
When a higher level
Can be achieved,
We expect more,
Everything improves.
Its like climbing up
A ladder with no end.
You go up three rungs,
Another ten appear
Above your head.
When will it stop,
Be considered... perfect?

Is it attainable?
For us to exist,
In such a world?
Since we are imperfect
In heart, mind and body?

Will it ever, really, be perfect?