they most likely did but think about our planet in relation to our sun. It is at a perfect distance to create and sustain life as we know it. Venus is to hot and Mars is not hot enough to sustain lifeforms as we know it on this planet. Who knows what kind of other forms of life they have though, maybe ones that arent relative to what we consider living. Or all this shit about solar systems could be a big fucking sham like 'The Truman Show" or The Matrix. Reality is what you make it...
I've asked those questions before. How do we as humans know what the "truth" actually is. For all we know this could be some big ass experiment. I have never been to space....have any of you? So we really dont know what the hell is out there. It might look like what they have been showin us all this time OR....It may be teeming with life....MARS just might really be crakkin for all we know....we dont know. I've started wondering about pictures they show on tv from rovers when they land on planets and the moon. We can take a simple picture here on earth and computerize it.....take off everything on land (buildings, structures, people, grass, dirt, water) and just leave the landscape.....throw some wierd color in there and wahlah...we have barren landscape just like the kind they show us, and even different kinds. I dont believe in the government. They only let us know what they want us to know. And if they dont want you know will definitely not find out about it...you will die first. To me it's fucked up but sometimes I feel that we are a product of a higher power and not GOD but the GOVERNMENT. I know we all have different beleifs and no-one should knock the other because of what he/she believes in, just respect it...but some of us cant even seem to do that.
And to touch on what JackTracks said above......this is life as WE know it, who's to say that there isnt some sort of different "being" elsewhere. The government wouldnt tell US....no not us HUMANS. Some of us would freak the fuck out. It would be like that one movie (Independence Day?) when muthafuckas was tryin to go out and meet them(the other species) on some fuck the government type shit. We're too crazy for our own good.