how about this for a conspiracy

maybe thousand of years ago we were put on earth by these being so they could study us, watch how we evolve, how long it takes us to get to their technology and if we become aggresive. I don't know just a thought.

Could we have been place here due to a war on another planet where the whole race was almost exstinct and maybe were here to repopulate

Well everyone that believes in a god believes we were "put here" . So this really isn't much of a conspiracy as it is a religion.

yes but.... christians dont think of god as from another planet or an alien... therefore you can't look at it that way...

we didnt just 'become aggressive' over night lol

we have always been aggressive since before the cavemen

look at nature; animals killing each other for Food
its a Life Cycle

and Men arent the only ones who murder for evil purposes

Look at the apes; there is always an "Alpha Male" in every ape society
the alpha male will rape and attack anyone who doesnt follow His Authority

So then he becomes ruler thru violence and force; and the kills all babies that are not his babies; by bashing their little heads into a rock
To Let Everyone Know this Ape is Boss Now
He will kill any ape who opposes his rule
he gets to mate with every female in the clan; and other males cannot mate until he finished with her first

and just to show the other males where their place is; he rapes them in the butt also; they scream he laughs

i am absolutely serious this is how most Ape societys work in real life
in the jungle
i think Gorillas and Monkeys both do this
ive seen quite a bit of good evidence to support this too so i will stand by it

Source :: 'The Dragons of Eden' by Carl Sagan
also :::' Shadows of Forgotton Ancestors' by Carl Sagan w/Ann Druyan

u have all the sources u need go look it up
theres a ocean of info about this subject

Humans didnt just become aggressive
Earth Creatures have always been aggressive

the only real differance is that we have gone overboard with it
our own destructive tendancys have led us down a path no man thought
Possible Nuclear Annialation

we need to become peaceful now because we had become 2 powerful for our own existance

my personal opinion is that we are direct decendants of Earth life and I do not think aliens seeded us
my evidence is DNA

the aliens COULD have interfered with our evolution tho;
and gave us modifications or 'jump starts'

i do think that is very possible