Awesome isn't it? I agree with you. I don't think we could possibly be the only human types in the gallaxy. For one thing, too many people have seen things that just can't be explained and the gallaxy is just too huge
It is amazing, but equallt amazing is one must keep in mind a couple of things. First our universe is still very young, only 13 billion years old. So it's also possible that we may be the only one's in it, as incredible as that may sound. Or perhaps we are not alone. Just can not know for sure. Another thing to keep in mind is what we are seeing in those pics are snap shots from the past. The universe at age 800 million years old, still a babe!
But lets talk about *if* there is life out there. It can be either more primiative then ours or more advanced. But to be more advanced would mean it evolved before our own. This possibility while certainly possible, is less likely due to the age and evolution of our universe so far. It's more possible for less primitive worlds. But lets assume there is a more adanced life source some where out there. We know it can not be nearby. It would most likely be at the very least outside of our own galaxy.
Even if this advanced life source could travel at the speed of light, 186,000 miles per second, it would take several hundreds of years to get here from the nearest galaxy. There are just too many wild cards and obsticles in the way that makes distant space travel even at the speed of light not the best way to get from point A to point B.
So what are these people seeing who spot UFO's? Well I don't know what, but my bet is it is NOT align life. Because any one that could over come all those difficulties I would think would be able to design better looking space ships then cigar shapped or saucer shaped toys we see photos of!