I'm not even going to bother explaining anything to you. Your lack of maturity and realization of certain aspects of the world makes it as if I'm trying to teach calculus to a five year old. Pointless.
Also, what Cardgame said.
We've all heard the story from scientists, that Sol is unique, that there's only a thin habitable zone which Earth falls under, a zone that had once engulfed Mars as well. They also said, that a planet needs to be under complete pristine chemical properties in order for organic molecules to begin formation in the water or from highly radioactive and explosive debris, ie. asteroid collision.
But here comes the point where I contradict myself, how would we know how ALL life needs to develop? Perhaps in the next solar system over, which we likely won't reach for at least a few decades, there are bacteria that formed from... hm, just for example's sake, methane gas and not oxygen. Maybe their body structure is 100% different than that of ours. Maybe, the development of another creature, is based on the planet/solar system/conditions it's under.
That's where I contradict myself, since there's no way of knowing that there's more intelligent life out there, except for the whole "the universe is incredibly huge, it'd be nonsense to think we're the only ones". But to be frank, I believe there's more evidence pointing towards there being intelligent life than there not being intelligent life.
And the Bible doesn't count for evidence against life.
In our lifetime? Probably not, unless a super advanced race came along to say hi and realized we shoot and then ask questions.
To have the complex technology needed to really go from system to system in an acceptable amount of time, will likely take a few more centuries, definitely not in the 21st century.
