To address your original question:
The mistake you're making is in thinking that there is a grand design to it all. The fact is that there is NOT. One thing that we've learned from examining life on this planet is that lifeforms can be remarkably hardy, surviving in the low pressure, low temperature, high radiation upper atmosphere and in the extremely high pressure superheated temperatures of deep sea thermal vents (and some of these critters enjoy a very non-"standard" energy cycle). It is quite likely that somewhere out there the may be planets with life on them - and there will be some among those with intelligent life. Why? Because life seeks it's own fulfillment. It is natural to do so.
There is no spirit realm populated with any kind of beings. The folks who tell you there is such a realm are only trying to use their phony invention to take authority to control you.
There is not a single thing of value in the entire history of man that materialized out of some spirit realm. Mystical manna has never fallen from the sky. Everything man has, good or bad, is a result of his mind and his labor, nothing more.
Don't fear boogeymen, and don't bow down to someone else's imagination.
Keep asking questions.
"I don't believe in the Trooth Fairy anymore."