Why do we tend to belive the news spread online and on TV and why we are hard to believe the Gospel? Simple! Becasue the Good Needs demands us a convertion, a cahnge of mind and a new way of living (it has its conditions to receive those blessings) and, those news spread on TV broadcast do not change life, or habits: There´s no commitment and, since it normally requieres FAITH, an abstract thing that has nothing to be proved, we´re not challanged, unless GOD intervenes to help our normal lack of it.
Joh 4:48 Then Jesus said to him, "Unless you people see signs and wonders, you will by no means believe."
Mark 16:20 And they went out and preached everywhere, the Lord working with them and confirming the word through the accompanying signs. Amen.
Logic demands signs and wonders, but He said it in advance:
Luk 11:29 Now as the crowds gathered even more, He began to say, "This generation is evil. It seeks a sign, and no sign will be given to it except the sign of Jonah the prophet.
Because He also said: Luk 16:31 But he said to him, 'If they do not hear Moses and the prophets, neither will they be persuaded should one rise from the dead.' "