The One We've All Been Waiting For: Is There Life On Other Planets?

Let us get the junk out of the way first, shall we? Crop circles: easily fabricated. U.F.O sightings: U.F.O doesn't mean space ship, it means Unidentified Fly Object, meaning an object that is in the sky, and that you can't be sure what it exactly it is. It's just not enough for me. Alien abductions: -insert list of hallucinogenic drugs and appropriate disorders here-.
Next, I'm going to briefly discuss my general theory about the existence of life on other planets, which does not include any research, but does however, include common sense and a lot of thought. The universe is... enormous. More so than we can possibly conceive of. I can't see how we  could be the only planet in the entire universe with any form of live. I feel as though the assumption that we are the only life forms in the universe would be the equivalent to the Europeans, knowing that the world was roughly as large as it is and still maintaining--without many excursions outside of Europe--that they were the only people on the planet.

Now for some actual evidence. It just so happens that there has been some further discovery in this area by NASA as of late. 54 of the 1,200 planets recently discovered orbiting distant stars are both relatively the same size as earth and are "habitable zones from their suns", which of course means they aren't so close that life forms would burn to death, nor so far away that they would freeze. I think that's the biggest (and most reliable) evidence I found about extraterrestrial life existing in general, but there are many other smaller pieces of evidence that I came a cross, mostly on this website. Upon reading a few of the articles I decided they were too controversial to spend a lot of time on here. Especially since I'm not super educated on this stuff  and I'm also very gullible, so I don't trust my own judgement on the legitimacy of such things, but feel free to check it out and draw your own conclusions.
As for those out there who live in fear of Aliens taking over our planet, here is some more of my general theorizing: Even the controversial evidence that I glanced at mostly involved microbes, bacteria, plant life and other things like that. Plus, even if there were beings out there of the same level or more intelligence than average humans, I actually paranoia about an Alien take over is probably based off of the same (figurative) geocentric view of the universe. If there are such societies out there among the stars, what makes us think they would be spending all there time, energy, and alien currency figuring out the technology and planning that would be necessarily for that? Don't they have their own alien world issues to worry about? This is even more unlikely when we consider how much we've damaged our planet and used up it's natural resources. We should probably stop flattering ourselves and quit worrying so much about it.

SOURCES

http://www.telegraph.co.uk/science/space/8337518/Life-on-other-planets-latest-discovery-comes-after-string-of-recent-signs-of-extraterrestrials.html