are we from earth or are we from 3 diff. planets

you know what i think i think that we could not have come from earth i think we are from venus. Venus does look like it has been destroyed by the greenhouse effect then we moved to mars where we coexisted with aliens from that planet during our stay in the planet mars we started to not really like the aliens so we shot our selves to earth and the remaining few of the military ran suicide missions and started to nuke the entire planet. thus blasting us here where we were left with primitive knowledge and tools

sry i meant 2 different planets

I'm going to close this as there have already been several threads that discuss whether we are originally from another planet.
Here is the most recent one from this forum
www.abovetopsecret.com...
perhaps you could add your thoughts to it