An intellectually honest answer would be, "That is my faith. I believe it without proof." An answer much like the one Gillianren gave earlier. (Not intending to put words in her mouth.)
I think we'll just have to disagree on this one. You and several others don't seem to agree with me on the burden of proof part, so I don't see how this part of the conversation would lead to anything fruitful.
We can certainly agree to disagree. But I would like more clarity on what you are saying so let me make a few statemetns so that your response might help me.
I don't see how the claim that religion exists is in need of proof, we are all in agreement on that.
A claim by an individual to belief in a deity is a statement of a state of mind and inherently untestable, therefor no burden of proof can be required because none can be offered. One may personally accept or reject the veracity of such a claim but there is no scientific dispute.
A claim by a religious group to collectively have a theology based on the belief in a deity is usually self evident, but is easily shown by the existence of documents or a spoken testament of the theology.
A claim of the existence of a deity that has no interaction in the material world, a demiurge or creator that is content to wind the clock and lets it run, is inherently unscientific and untestable because there is no interaction with the material. One can require no burden of proof but one is also under no obligation to accept as more than a personal statement of belief either. One might wonder what the point of belief in such a deity might be.
A claim to the existence of a deity is scientifically testable to the extent that the claimant proclaims the deity affects the material world. So far no claim of a deity has produced a modicum of proof. Most such claims since the invention of science seem to have fallen into the "god of the gaps" style arguments and quietly retreat as science has advanced. They are superficial reductionist social arguments that may seem persuasive to some but are folly.
A claim the "God hates... or God wants me to... and the like are inherently untestable because they beg the question of the existence of God. We can atheistly view them as a learned or invented description of an internal psychological states and regard them as such.
Given these statements, please elaborate on where we disagree about where testablity lies in religion, separate from other beliefs or belief systems. I do not understand how you think, as it seems to me, that a statement such as "That is my faith. I believe it without proof," which contains no material claim is an intellectually dishonest description of an internal state, rather than an honest but personal description. "Religion" cannot have a burden of proof, because it is nothing more than a concept that unquestionably exists. Claims by the religious and non-religious alike can be subject to a burden of proof.