Because we cant just trust someone if we barely know them.
trust is a special thing that we should think twice if we will give it.
.. trusting someone might be difficult if we dont know if that person is trusthworthy and if he really deserve it.
What do we do? To keep on not trusting one another or to find a way of learning to trust...as you are well aware, no man is an island. If I don't trust another person, I should expect from others.