I am waiting to see if there is any indication that life developed on Mars. Mars seems to be the one place that we can actually visit to look for signs of it. If it developed there and died out, it still means that there is a high probability of it developing in places that are warm and wet, but otherwise not having all the other attributes of Earth.
I don't think I will live long enough for humans to actually visit any of the giant planet moons that might have very non-terrestrial types of life in very non-terrestrial environments. But, if something like that is found, it would up the probability of life developing in other planetary systems by a huge amount.
As for alien technological societies, that is another factor in the Drake Equation that we would have to contend with at great levels of uncertainty. How long does it take to develop? Does it require a very stable environment for a very long time? Or, does it require a changing environment that fosters intelligence to deal with it? Does it require a "Goldie Locks" environment that is just challenging enough to require intelligence to survive, but not so challenging that the probability of survival long enough to develop technology is vanishingly small?
Personally, I expect that life will be found to initiate in places like Mars once was, and perhaps other places that are much different. But, even a technological society might never realize that there is a whole galaxy outside their environment if that environment has a dense, cloudy atmosphere, or maybe a planet-wide ocean that has no land above the liquid surface. And, on more massive planets with thick atmospheres, even using balloon technology to get high enough to see the stars might still leave the inhabitants unable to get space ships out of the atmosphere and the strong gravity well into space, even to a low orbit moon, if they are lucky enough to have such a low-hanging target.
So, I divide this issue into 2 steps: (1) life elsewhere, and (2) technological development elsewhere. I hope to see the first step reach a positive conclusion in my lifetime. But, I expect that the second step my not have an answer in an extremely long time.