1. Look at all the churches in this country! There must be hundreds of millions of people just in the U.S. alone who believe God exists. That many millions of people just can't be wrong.
a. BANDWAGON
b. How popular a belief is doesn't tell you how true it is. Popularity and truth are different things. (This is sometimes called the Common Consent [or Common Belief]) argument for the existence of God.)
2. Abraham Lincoln was one of the best presidents ever, and he believed in God. That's why I say God exists.
a. (INVALID) APPEAL TO AUTHORITY
b. Lincoln's greatness involved politics, not philosophy or theology. He's not an authority on those issues.
3. Russian dictator Joseph Stalin killed millions of his own citizens, and he was an atheist. Therefore, atheism is wrong; God exists.
a. AD HOMINEM
b. The fact that Stalin was one of the most evil people ever doesn't mean he was wrong about believing there are no gods. (Hitler was just as evil yet he believed in God.)
Sometimes some students think this is cherry picking, since it's looking at one evil atheist when there are loads of decent atheists. But it's actually not cherry picking because the conclusion isn't that atheism is evil or that it leads to murder. Instead, the conclusion is that the argument (for atheism) is wrong, and the reason it's wrong is because of a negative trait of (one of) its advocates. A negative trait of the person is used to dismiss the idea.
4. A few decades ago, the Supreme Court ruled that public schools couldn't make students pray. Since then, there has been a tremendous an increase in violence and drug use among children. Gee, I wonder why?
a. FALSE C ...