Science cant prove everything. Im not scared of death only the pain of dying. My friend is one there are some legit ones
The other thing is, science can't disprove much either. Just because something can be stimulated by the brain, doesn't mean that it''s not "real." A good comparison I read was , if you were having a dream; and there was a brain surgeon in your dream...say this brain surgeon did something to you, in your dream, and you woke up as a result. If you then fell back asleep, instead of staying awake, and told the dream brain surgeon that there was a real world which you woke up to, you would know this real world was THE real world but you wouldn't be able to explain to the dream brain surgeon how you knew. Consequently, he may not believe you, and disregard our world as a hallucination.
The description of NDEs as "realer than real" is part of what gives me this idea that we should trust those who have them. They can't fully explain what it feels like, but recognizing the "realness" of their current setting should not be difficult at all.