I a section of time and space having no influence from the past or future ...
No, sorry, that's wrong. We, and everything, change the future every moment, sometimes incrementally, sometimes in big steps.
... life is perfect in as much as it can be.
That's an unproven assumption, a statement of faith, if you will, and there are many compelling arguments and much evidence to suggest it's an erroneous conclusion.
Humans are forms of life therefore we are also perfect within any given section of time and space...
An assumption founded on the above erroneous assumption.
... having no past or future to compare with, only this time and space.
Oh dear, again the logic is flawed. We have the past to draw on, in fact this vision of the past, a better time or a Golden Age, underpins many religions, and underpins much populist politics, you're own back-yard is founded on it.
How can this not be any other way. Life is perfect, perfect, perfect
How can you not see the suffering in the world?
The dignity of the human and nature is one thing, but perfection ... no.
If, say, this given moment is perfect, and things change, then every other moment must be less than perfect. It could only continue to be perfect if it continued without change or movement.