@Frank Apisa,
Frank Apisa wrote: ... are you saying a person has to "believe" a god exists in order to use expressions like "goddam it?"
In the general case no one can base this statements on things that he does not believe in. If somebody does not believe in God he cannot base his (emotional standing in this case) on non-existing beliefs ... it has no logical interpretation.
As you don't believe in God, you cannot say 'goddam it' (for this is invalid statement in your understanding of the world) ... if you want to express displeasure, frustration, anger or surprise you may use something more valid (to your understanding of the world), like for example 'big bang damn it' ... or 'thousands thunderstrikes'.
If you want to express surprise or admiration you should use valid to your understanding of the world concepts, like for example 'this is A mf, A man, as the evolution of the stars!'.
Basing emotions on God related statements makes no sense to an agnosticist ... as you have already claimed that mentioning this 'does not even worth the efforts'.
Saying such things may only spoil your consistent image of logical thinker ... and as A mf of logic.
Otherwise if you use expressions like 'Oh, my dear God', 'Goddman it' etc. you implicitely acknowledge the existence of God.