Its quite fun how you try to use telescopes to localize planets which may be able to carry "life" forms when they in fact are some million years ahead of what we can see due to the terrific invention of a HUGE universe, go smart ass god.

Aliens do exist, in another galaxy or something BEYOND other galaxies which we will never discover.

Yes. Their are these little germs in outer space. Do they count as aliens? If no then no :P

It's hard to imagine how many possibilities there are. We could be a grain of sand in the beach of another world. A drop of water in a jungle. A germ inside an animal....
Anything & everything is possible

Well, theoretically speaking, there's no way that we're ever going to go to the aliens to meet them.
Every documented encounter is due to the aliens coming to us.
We don't even know where they are.

An infinite universe has infinite possibilities. Infinite possibilities become true at some point.

By that logic, there are aliens.

If there is life here on Earth there must be some other life, somewhere in the Universe. We can't just be the only living things in the Universe

It is possible that there are other life forms in the universe. The universe for a fact that it is still expanding. Although I doubt aliens would visit us. If it is true, aliens would have more advance technolagy. Although if they were to visit us, it would need our resources, as in Lightening and other things. As far as evidence stands, there really isn't any. I doubt NASA would make a space craft and send it into a universe trillions of lightyears away just to find life. Then again I dont work for NASA, so the could. There really is proof that half of the UFO sightings were actually mistaken identity. There is no evidence of alien sightings anywhere in the world. I think NASA is investigating Mars. And about Stonehenge, it maybe a sign of an alien signaling something or a distress signal. it maybe an old sculpture made by something evolutionary. As in a caveman, or a dinosaur... wow I got way too deep into that.
Crop circles, UFO sightings, Alien sightings, Unnatural things happening... There may be others somewhere in our galaxy...

Suppose we had the technology needed to travel to a inhabited planet, wouldn't we try to make contact, even if the said planet was inferior to ours, technologically speaking? Like, if there is any extraterrestrial intelligent life, i'm pretty sure they wonder if they are alone out there, too.

Even if they were just microbes, our first action would be to preserve and study.