"where the possibility of conventional(life as we understand it) exists.For me that's more than enough reason to maintain an open mind"
Until relatively recently we were entirely unaware of...
Viruses
Bacteria
Tube Worms
Until we discovered those, our idea of life as "we knew it" was different to what it is now. We thought that life 100% required sunlight. Then discovered that all life requires is heat, water and minerals.
There have been experiments done where the Martian "atmosphere" was replicated in a lab with a view to seeing how certain types of bacteria would cope. Surprisingly, even though the bacteria had evolved on earth, some of it was able to replicate on another planet and under entirely different conditions, while being exposed to very high amounts of radiation.
There is not a chance in hell that we have as yet discovered all forms of life.
Life in different pressures, gravity, temperature, chemical conditions and so on could be very far removed from what we presently understand life to be.
That's not yet taking into account that it's very possible for other forms of life to rely on another building block, unlike our carbon based world.
The double-helix gene of earth's life forms is also not set in stone. No reason why there cant be a triple or quadruple or more based genetic code elsewhere...or something totally different. Like the difference between HTML and Linux.
Then we could move onward and consider the possibility of AI and the the idea of trans humanism. Like it or not we are already in the trans-human age and from here on out things will only progress. Upgrades to brains, nervous systems and other environmental interface mechanisms to be grafted directly into the body. That future is coming. You need only look at what the big tech companies are investing in these days to understand that.
A friend of mine is doing research on genetic implantation. That is, taking artificially created bits of code and implanting them into either an embryo or a living body to bring about a desired result. Where does that take us?
Its reasonable to assume that at some point down the line society choose machine based immortality over the frail biology we are currently subject to. IE a race of biologically spawned conscious beings living inside of immortal robotic bodies. Multi-conscious hive mind types where one consciousness can be present inside of an entire group of individuals.
So, from both biological and engineering standpoints life is changing and it is quite probable that even our own human life, this one example that we have, will be vastly different from what it is now. At some point possibly, unrecognizable from its present carnation.
Then we could talk about terraforming of planets. All the way from planting genetic code on a planet to races which are able to send self replicating 3d printing robots to a planet and entirely transform a part of the planet or the entire body of it into whatever they please. Would that be conventional life? Probably not.
If you told a machinist a hundred years ago that he would be able to print his tools from a pile of dust and that they'd be stronger than any tool he could create...he'd laugh at you. Much the same as you probably laughed at the above paragraph just then.
Yet here we are. Able to use printers that can print tools from an array of metals to the spec and size that we want.
And just because i'm on a roll right now.
Ever heard of Euphoria? It's self coding engine that requires you to input the first generation of samples along with the desired criteria. The software the n simulates the evolutionary process without requiring any further input and produces the best possible result. For example...
You want to create the strongest drill bit ever. You get some engineers to design you a string of first generation bits. The specs of each bit is then entered into the program and given a numerical value. IE Strength 9/10 weight 7/10 Surface break 8/10 Flexibility 5/10 etc etc.
You can enter say ten 1st generation samples and ask the software to create a population from that. At this step it will take 10 bits and turn them into 10 million bits by simple adjusting the parameters from each bit slightly while maintaining the original average parameters across the population.
So you have a bunch of different bits with different values now entered. Generation 1.
You then enter the desired parameters...
Cut speed, Roundness of Hole, Friction Heat, Durability.
Then all you do is press play.
The software now runs simulations of all these bits carrying out various drilling tasks. And it gives them a score based on how they performed under the selected criteria EG Cut speed 8/10, Roundness of Hole2/10, Friction Heat4/10, Durability 10/10.
It takes the highest scoring bits and mates them, sharing their features.
After this process has been repeated thousands of times it ultimately gives you the parameters for the strongest and most efficient bit possible. One when compared to the original designs imputed is just on a whole new level. Now, what happens when we do this with a much more complex system like a computer or a robot? What if we begin the process at a much more intricate level. Like utilizing mycelium patterning and communication and then building on that? The possibilities are entirely unimaginable.
Now. Take this type of software, add in the idea of 3d or nano-printing and you begin to understand that in the future is very very possible that life will be created. And we we wont be constrained by the double-helix. We wont be constrained by building material and we wont be constrained by energy.
My feeling, since you asked, is that its very possible this type of technology already exists out there. We are doing it, why wouldn't anyone else?
Would we recognize it's product when we see it? Would we know how to look for it? Through the lens of our current understanding of life, sometimes yes and others times, not a chance.
Bored yet?