Fickle poison

Do I poison whoever I touch?
Do I make them fear so much?
Or do I truly help them
creating with my own pain a gem?

I feel everyone I touch loses their sanity
I taint their views on reality
learning only uncertainty
and life’s cruel brutality

Some say I am helpful others say I am the opposite
Could I be both? A contradicting composite
Both a poisonous and healing
Sweet smelling yet bitter tasting

Inside I am a poison trying to be a cure
But I am capable of nothing more