The “spirit world” has always been here, and the worlds methods for contacting the spirit world have always been some form of heightened physical activity or emotionalism. Our electrical machines are giving them doors where before only “sacred sights” did, and the “restless” spirit hauntings are also all brought about by states of extreme emotionalism/biological distress. Ghosts are basically just lost and confused, and the angels and demons are more concerned with the collapse of quantum wave patterns to trouble you as an individual.
They might affect you, but there is a reason all of the old religions say that you should not fear for these mysteries of heaven. They are beyond conventional understanding or even pragmatic concern. Their activities have nothing to do with the price of tea in China.
“But those rare souls whose spirit gets magically into the hearts of men, leave behind them something more real and warmly personal than bodily presence, an ineffable and eternal thing. It is everlasting life touching us as something more than a vague, recondite concept. The sound of a great name dies like an echo; the splendor of fame fades into nothing; but the grace of a fine spirit pervades the places through which it has passed, like the haunting loveliness of mignonette.” James Thurber (American Writer, 1894-1961)
“Where’er we tread ’tis haunted, holy ground.” Lord Byron (English Romantic poet and satirist, 1788-1824)