GRACE and sin

"But where sin abounded, grace abounded much more..." Romans 5:20

Why is it, when someone wrongs us or hurts us with sin that it's so hard to have grace? Because we ourselves have inflicted pain ourselves?

Why is it that it's so hard to comprehend that GRACE actually is bigger than sin?

Why is it that we jump to focus on the sin instead of extending grace?

Why is it that we hang onto sin with a tight grip but when grace is offered so freely we push it away with a cold and judgemental heart?

Why is it so hard to believe that we are worthy of grace?

...BUT GRACE WILL ALWAYS ABOUND MORE....