You must be skeptical; end of discussion. Those who are not are simply just gullible.
Remember, having a belief in something is not objective and quantifiable evidence of that something's existence. More often than not there are reasonable explanations for unusual occurrences. If you want to be taken seriously when searching for the truth about the possible existence of some form of life after death, or the long term survival of consciousness, then you must be willing to accept this fact.