caterpillar to butterfly but lifeless

I see, hear, smell, some don't 

It helps you everyday, without your knowledge:

But you still hurt it, with knowledge. 

It won't stop helping.

They wish to cry loud, but choked with tears,

Helplessly looking at loved ones,

Like from caterpillars to butterflies,

You use the dead, let them rest,

after all you did to them.

You are blind,

You are deaf,

What is the need for eyes:

When you don't see help,

What is the need of ears:

When you don't hear help.

Is it you don't hear or see or are you pretending:

to be a human with blood.

Still burning,

But pretending you don't know why.

I never understand, and don't know why.