The Top 40

The answer is either that there are no aliens out there, or that they're so alien we've been visited and perhaps even colonized but can't even recognize it because of their nature.

I'll go with yes, there are others "out there".

They have been, may now, or at any future time will be among us.

I am not tin-foil hatted, nor "They Live" paranoid, and I have a Judeo-Christian belief in God. It is rather naïve to think we are all alone in this huge beyond measure universe.

Why have they not made contact? Maybe they don't like what they see of us. We might appear as clever apes, nothing more. Our planet may be in quarantine.

https://www.youtube.com/watch?v=YuIGwtKrdUY

Maybe they follow the "prime directive." Or maybe they just don't litter.

Or maybe they just mutated, you know kinda 'evolved.

Actually, scientists are saying that the chances of finding life elsewhere in the entire universe are getting smaller with every new discovery, since now research shows that a full 90 percent of all galaxies cannot support life anywhere within them.

Then there are the beyond-astronomical odds against life having ever formed on earth to begin with.

"It is rather naïve to think we are all alone in this huge beyond measure universe."

Why? The size of the universe is irrelevant to the existence of life. When the universe formed in the Big Bang, it could either get larger or collapse. If it had collapsed, we would not be having this discussion. But it got larger. Hence even if no life had formed anywhere in the universe, it would still be the size that it is.

Here's my slide show on the topic.

The big bang is just a guess.
Do atoms wonder why humans never contacted them?

I wonder if we would recognize the life form if it was based on something other than carbon, perhaps silicon or some crystalline structures.

The universe is as inhabited as God wants it to me.

Without more information and a greater knowledge of what it is like on other planets, we cannot say there are odds one way or another about life, let alone intelligent life, anywhere but on earth. The abundance and ease of life on earth does not mean it is remotely true anywhere else. Maybe it is, maybe it isn't. We're like ants trying to invent the computer using grains of sand.

As some deep thinker once said, We can't get much past our Moon. Do you really want something with the technology for interstellar travel to show up here?

I have no doubt they're out there. So why don't we see them?

I can think of several reasons:

They don't want to be seen. Duh. Any civilization advanced enough for interstellar travel can easily stay hidden. Maybe they don't want to catch our cooties.

Maybe there is a galactic or larger hierarchy. Every society has a headman. Why not the galaxy? And what the headman says, goes.

Maybe there are possibilities we don't know about. Maybe the interest is in other realities; the current simple 3 dimensions are just too uninteresting.

Maybe radio waves for communication are so 19th century. If a FTL way to communicate exists, we don't know about it, but it would make radio obsolete. So SETI would be a waste of time.

Or, maybe they just don't like spam:

http://www.sharenator.com/If_extraterrestrial_civilizations_are_watching_our_TV/

Applying Occam's Razor, it's most likely there is no intelligence in the possible polyverse.
Therefore, best to think rock thoughts and stay stoned on thinking you think anything is alive.
Since Nature abhors a vacuum, doubtless stupidity rules -- at least on so-called planet Earth. Evidence aplenty of this stupidity in the lifeless newspaper reports soiling this planet.

Life is as infinite as the universe is. The smallest fraction of infinity is infinity.

If travel is restricted by the limits of light speed, there will be very limited contact. If not, this rock is already a spot of great interest.

What the rules are I do not know, but there will be rules. That which is destructive cannot advance infinitely.

I'll go with the God explanation. It works for me.

People of Faith have a logical idea of what Life is all about.

The reason you can't see aliens is the same as why you can't see dead peoples souls. You haven't the capacity. Yet.

Ever notice the aliens sighting reflect the times they are seen in?

In the 1700's aliens were riding across the sky in horse drawn carriages and 2000 years ago they were dressed in curtains and sandals and for the past 50 years they have had big heads and eyes with skinny body's, sort of the like the models on the cover of Cosmo and have an odd predilection about anal probing. By 2050 they'll have nappy hair and be pissed off all the time for no reason at all.