Been to some of the most "haunted" places in the western United States. Sites of alleged massacres during the Indian Wars, burned Spanish monasteries, old ghost towns, several mines, and multiple human trafficking sites on the Western coast. It's all bubkis.
Extensive experience hiking, camping, and hunting in the Pacific Northwest and northwest since I was 12, and bubkis for sasquatch in what is supposedly his main drag.
Way I figure it, that movie Men in Black didn't have it too far wrong. Humans are dumb, panicky animals, and crap we can't immediately explain scares us. We misremember things, our eyes don't work right, our brains make conclusions based on incomplete information.