Theists - how certain are you that a God exists?

[Kingpin]

So I have a question.  Let's assume atheism is indeed true.  Would it not follow that each person finds their own meaning and purpose?  If I find that meaning in believing there is a Flying Spaghetti Monster that created us all, does that not satisfy the existential search for meaning?  Why then do you devote days and hours posting on a bulletin board to prove there is no FSM?  That person finds their meaning just the same as you do.  You can call them a quack and move on.  Why are you looking for empirical evidence of this FSM?  Is it because you are searching for an ultimate meaning?  

Theism is unreasonable and illogical, ok so essentially they are crazy and akin to "believing" in the tooth fairy for which there is no evidence only stories.  Correct?  What does it say about someone who continues to try and have the "crazy" people prove to them that their fantasies are real?  Do you really desire to be crazy as well?

When followers of the FSM try to force their views on others, and dictate laws based on their religion, then it will be time to argue against them.  You see, Christians and other religious idiots are not simply believing something false, they are a danger to others and will not keep their stupid, idiotic nonsense to themselves.  So they need to be shown to be the stupid fools that they are, and they need to be prevented from harming others.

The FSM is harmless, and, in fact, is useful in mocking the stupidity that is religion.  That is why we don't spend much time arguing against the FSM.  If Christianity were harmless, practically no one would bother arguing against it.

And again I ask if atheism is true and there is no ultimate meaning except for what each person finds for themselves, how is sharing their beliefs "harming others"?  Harming in what way?  Could that not be flipped around in you proselytizing you belief that there is no God on me, "harming me"?  Now for sake of argument, let's forget about the radical bible thumpers yelling from the street corner, because I would be right next to you yelling at those morons.  But in normal everyday conversation if you meet someone that says they are a Christian do you feel it necessary to engage them on that point?  Or do you reserve the engaging only if they try to talk to you about believing what they believe?

You state that Christians are believing something false but do you know that with 100% certainty?  I am a Christian and I keep that to myself but if asked my beliefs I will not deny them.  If we met in real life, would you have an issue with me solely on my belief (because as you state I believe in something untrue and am a potential danger to others) or would we be cool (assuming personalities aren't conflicting) unless I start telling you to believe what I do?

I have many atheist friends.  I even have hindu and muslim friends.  I have respect for their own views, we have had discussions on differing viewpoints, but I don't feel any are trying to persuade me to their belief only giving their own reasons for their belief.  That's what I try to do here.  I defend my position on why I believe what I do, but that it is no way trying to persuade you to my side.