Isn't that the difference between Atheists and religious believers? If I ask you, you're going to say that my believing that my friend was saved by God is an irrational thought, because you don't believe in a God. If I tell the story to my Pastor or someone at church what are they going to think?
No no no, logic and reason is completely separate from belief, though that's not to say they cannot intertwine...they can. Atheism is not a dogma or belief, it is the rejection of theistic concepts due to lack of evidence and logic. An argument can be true because it is logically consistent or because of weight of evidence (they use weight of evidence in our judicial system). Your belief in god is irrational because of both logical flaws in christian dogma and lack of evidence. A double whammy.
A simple example of a good logical argument is:
1) Premise: All cars in this group are either red or blue.
2) The car I am looking at is not red.
3) Conclusion: Therefore, the car I am looking at is blue.
An example of a bad argument (illogical) is:
1) I have red hair and I am tall
2) My mother has brown hair and is short
3) Therefore, she is not my real mother.
1) Mice eat cheese and Cats eat mice
2) There is lots of cheese and no mice in our house
3) Therefore, we must have a cat
A good example of a logically sound argument that refutes the biblical god is called the problem of evil.
1) God is all-benevolent, all knowing, and all powerful.
2) Evil exists
3) If god was all-benevolent, he would not want evil to exist
4) If God was all-powerful, he would be capable of destroying evil
5) If god was all-knowing, he would know how to get rid of it
6) Therefore, because god has not gotten rid of it, he is either malevolent, limited in knowledge, or limited in power, or he does not exist.
Again, for the millionth time, if you want to call me irrational or whatever else, that's fine. It really doesn't matter to me and I don't let it get to me. I believe that Jesus Christ died for my sins and that there is a God. That doesn't make me a bad person or anything else, just like it doesn't make you a bad person that you share a different viewpoint.
Ya honestly man, it's not an insult and it's not personal. It just is. I'm not saying you are irrational or stupid or something. I'm saying religious belief is irrational. There is no question about this.
It's just as rational and reasonable to believe that an invisible teacup orbits the moon.