Kindness

Pure kindness, a precious treasure found

In a world where cruelty and hate abound

A selfless act, without a thought of gain

A simple gesture, that eases someone's pain

It's the stranger, who goes out of their way

To help a lost child, find their way back home

It's the neighbor, who takes the time to say

"I'm here for you", when you're feeling alone

It's the friend, who drops everything they do

To lend a listening ear, when you need to talk

It's the co-worker, who goes above and beyond

To help you with a project, when you're stuck

Pure kindness, it's a precious thing

That brings light to the darkness, and joy to everything.

Yes, replacing "rare" with "pure" still works as the poem emphasizes on the preciousness of kindness and it's rarity in the world and "pure" also convey the same message and meaning.