Space Aliens: Can They Be Real?

What's the first thing you remember when someone says space? I think of aliens. People think aliens are fake. Scientists think so, too. People say there is no air, water or anything a human needs to survive. Yeah, that;s right, there is no air or anything else on the planets, but that is only   what a HUMAN needs. Think of it like this, aliens might not need what we need. That is why they are aliens! They are different. They might not have a ear. There might be no such thing as walking. They can be ten times different, in ten different ways! They might not have to breath or drink water. That means they could live on every planet. Just because the planets don't have what we need, that doesn't mean that aliens can't live on that planet. Aliens can be different! This can mean that there might be aliens on every planet! But my question is that why people still think aliens can real. Someone probably already said these words. Maybe people didn't believe in the man or who ever it was. But one day I am pretty sure someone will prove that there are aliens in outer space.