"What if WE ARE the Aliens? Don't call me crazy (just yet), but hear me out.

Those beings who seem to have the same features as us, such as hands, arms, legs, feet, heads, a mouth, and eyes, could very well be us humans, but they could be from the far, and I mean FAR future.

Think about it... Evolution.

Humans have evolved from apes, and we carry on evolving. Who's to say that in the future, we all evolve into what these Extraterrestrial beings currently look like? I mean, if we could go back in time right now, wouldn't the current race of humans go back in time to see us all as cavemen?

Maybe even perform some tests to see what has changed? I'm sure that would be interesting to see, but what if a caveman saw us? He/she would be confused.

Much like how we all have been with these sightings, experiences, and abductions. Which brings me to my next theory.

Maybe they abduct humans to perform tests (as it seems they've been doing) to see how developed we are/they once were.

They could be regular humans from the future, coming back in time to visit us, study us, and monitor our every move. As well as even protecting us from potential threats such as comets in order for us to continue living, and for them to exist in the future.

Unless we all got wiped out at some point in the future, and they are actually the new breed of species which replaced the humans on this planet after the disaster.

There is even a video somewhere on youtube that looks to be a UFO countering an object from space (comet, asteroid)?

Another theory of mine is a connection between religion and these extraterrestrials. Religious people talk about how God/a God created us. Well, what if these beings ARE God?

What if THEY created US? Maybe I'm looking too much into this, but then again..."