I would like to think that at some point some of them will converge upon each other. Even if it is distant radio signals saying nothing more than "We are here." it will be enough to motivate mankind to continue wondering what is out there.Yes, but with the age of the universe and the expected lifecycle of civilisations I'm more thinking that there could be and will be other intelligent lifeforms out there, but will they exist at the same time as our civilisation and will there ever be contact between the two?
If that was aimed at my comments, you have misunderstood my position. In my first response to this I pointed out that the existence of life elsewhere is highly probable (one can't say that it is certain, because there is no incontrovertible evidence of any kind for the existence of life other than on this planet). I also pointed out that, judging by the development of life on this planet (which is all we can do, having no other comparator) the kind of life capable of developing a technological civilisation may not occur very often, and the length of existence of such a civilisation is open to question. Those are observations, not opinions.The problem is us and our ego. Thinking we are the pinnacle of creation, and to say we'll never find anyone as advanced as us, or even thinking our evolution was the first and/or only is narcissistic.
It helps to remember that the "Fi" standards for Fiction.I think you'll find that most of your registered users here believe in ET's. That's what Sci-Fi is all about!