On faith, belief, and offense:

There is no injury to the non-believer in the believer’s continued belief. 

The positive statement “I believe in x, which is opposed to your views” is inoffensive. However, the statement “the belief in x is a false belief” is offensive, because it denies the potential verity of an unverifiable thing. While faith-based beliefs are unverifiable by nature, believing is a form of subjective truth, and to deny it is to call the believer a liar.

The point being that faith-based belief in a thing and faith-based non-belief in a thing are equally unverifiable, and as such, all faith-based beliefs or non-beliefs can co-exist logically, because blind faith is illogical in the first place. It is just as likely that an idea or object that is not readily apparent exists as it is that it doesn't, so long as it remains apparently not.

There is no contradiction in the simultaneous existence or non-existence of that which can not be proved or disproved with certainty. God may or may not exist just as unicorns or aliens may or may not exist. These things all possess potential for existence but lack any apparent evidence to that existence. That said, it is still illogical to assert belief in any such thing, because it is illogical to believe in anything that is not apparently so. Furthermore, it is illogical to believe in logical contradictions; absolutely non-existent objects, such as a round square or a highly populated desert isle.

There are three ways that people respond to the unverifiable: 

1. Blind acceptance, due to misrepresentation of the subject as having evidence of being absolutely true or false

2. Doubt or rejection of the subject as false in the face of such a misrepresentation

3. A rejection of the subject as a non-issue; as that which can not provide evidence of itself has no effect on the perceivable world, because it either does not exist or works in such a way as to be imperceptible or undiscovered. 

Obviously, the third response is the one that logic prefers, because blind acceptance as true and based on a lack of evidence is illogical, while doubt or rejection as false based on a lack of evidence is also a form of blind acceptance. To suspend judgment, to refuse to take a stance is most logical because it allows for existence or non existence, and places no particular value on either.