system
A chat on 4chan
human
it is because it is no longer relevant to you. many other cultures lived with and interacted with spirits and other energetic beings up until the present day. most of us had it violently wrung out of us by the catholic church or generations, enough to have children growing up told to ignore the spirits and think they are evil. then you have adults that will tell their children that what they can objectively see is not real. a few generations of this and those children will not maintain any sort of relevant connection with that spectrum.
gpt
because nobody knows and any attempt to explain it just looks like coping. See  for the best explanation I have seen
human
But many people are looking for those lost connections this post is talking about. They just don't seem to find (prove) it afaik.
I think magic and the occult are very strong symbolism, but they're just that.
But people want to believe like they want to believe people promising easy money or weight loss. Also to escape the harsh, cold reality of life.