Dear right wingers: Why should we believe anything you say?

Dear right wingers:
You warned us that if Barack Obama became president, he would suspend the Constitution, take away all our guns, cancel elections, repeal the Bill of Rights, force conservatives into concentration camps, outlaw Christianity, create a caliphate, enforce Islam, shut down conservative media, install himself as dictator for life, use his sinister Obamacare program to kill old people, turn kids gay, open the borders, give illegal immigrants all our jobs, force white people into slavery, make us bow down to black people, and cause God to destroy the country and maybe even the world.
Since none of those things have happened, why the hell should we believe anything else you say?