Why are we so vulnerable..?

Why do we love them even though we know that they don't care much..?
Why are we so soft even though we know that they throw hammer at us..?
Why are we so tolerant even though we know that they deliberately make us frustrate..?
Why are we so kindhearted even though we know that they take advantage of us..?
Why are we so weak even though we know that it strengthens our enemies..?
Why are we so forgiving even though we know that it is taken for granted..?
Why are we so good-hearted even though we know that they break our heart..?
Why are we so gentle even to those who are rude to us..?
Why are we so empathetic even though they don't give much importance to our feelings..?

Why are we so vulnerable..?

Why are we not learning from the lessons that others teach us all the time by taking advantage of our soft character? While others are busy living their life, even at the cost of someone else's life by taking advantage of their vulnerability, why do we always want to make sacrifice even though we know that it doesn't worth it..? Why..?

When are we going to give importance to our feelings.. our life.. ourself..?