Ok, first off: if your only reason for coming to this topic is to try and tell me how wrong I am, feel free to go do something productive with your time instead.

That out of the way, I don't mind well thought out criticism of my ideas.

I usually classify spirits into three categories:
Demons - evil spirits that are not and never were human
Evil Spirits - spirits that are evil (surprise!) and were once human
Other spirits - spirits that may or may not have been human, and are either benign or benevolent.

wow..I dont seem to see a trend in criticism on these boards everyone is entitled to thier own opinions no need to get defensive before you even post the theory...

The theory does make sense.

It is hard to tell the intentions of spirts they seem to range soo much from one to another.
so far i have been just going by human and inhuman with alot of subcatagories under those. .

there are also good nonhuman spirits .. if there are demons there must be angels orsomething the like.

Agreed.

The views expressed aren't exactly scandalous in the paranormal realm. No worries. :)