Tonus-In a situation where the only accounts are of undetermined origin, where the original accounts have not been found, where the only copies are literally that- hand-copied accounts that come with the caveats of such a process... it is natural to express doubts, even if those accounts reported normal or mundane happenings.
This is precisely why we are left with having to make our own call.
If these accounts also report on supernatural events, possibly involving actual deities, our skepticism must be ratcheted up. Otherwise, we are left with many, many such claims from people throughout the past that are suddenly possible.
Yes, and this is where we reach that additional layer of consideration that we call faith.
It is a unique layer because it now involves our personal life experience. As you indicated above, when the accounts seem scant you either believe or not. What will determine which? Your personal life experience. You'll look at your life and see none of the gospels in it, or you'll see enough of them to compel you to believe.