There’s suspension of disbelief—vampires, werewolves, witches, magic powers, etc.—and there’s an impossibility of suspending such belief.
Like when two immortals hook up, and by the end of the book we’re supposed to presume they’ll be having crazy monkey sex forever. FOR. EVER.
Really? Most of us have been in relationships that have lasted beyond the ’anytime, anywhere’ stage, and do you really believe that entities who are going to live forever will still feel the same flush of passion 273 years down the road that they did at the end of the book?
It’s possible to suspend disbelief enough to think immortality is a reality. It might not be possible to think they’ll still be hankering for each other 1000 years from now in the same way that they did when you read the last page.
Do you have problems suspending your disbelief when you read?