I've always found it easier to believe that alien life is out there rather than not. We live in a huge universe. I also believe it is being hidden from us.

Like you said, aliens have been talked about for a long time in our history. I'm also no so sure that we are not the aliens, at least in part. Our own evolution seems to have taken huge leaps over time, and so has our technology.

At the very least I think they enhanced us by modifying our genetics.