I'm sceptical of "near death experiences" because my mother used to have them every time she had an anaesthetic at the dentist's (back in the Thirties). She found them highly unpleasant because she wasn't 'near death' at the time - it was just the effect that the anaesthetic had on her brain.
Most NDEs follow a highly predictable pattern: a sensation of travelling down a tunnel, a bright light, a sensation of peace, meeting somebody. Or of floating above your physical body and looking down on it (which was what my Mum experienced). Then you interpret these sensations (usually) according to your prior beliefs. So Protestants will say that they met with Jesus, but Catholics usually meet Mary, Muslims meet Mohammed, etc, etc. Very few people change their beliefs after having an NDE, which I think is strange if they really do come face to face with God.
But having said that, there are some exceptions, and I'm sure that some NDEs are genuine.