We should also consider the possibility of self destructed civilisations.
Its not certain if we will survive as a species long enough to become spacefaring.

I dont think we will find intelligent life in my lifetime i hope we do but its just a very low probability.
First problem is our seti attempt is nearly useless we have discovered through simple progress that the time a civilisation broadcasts detectable radio waves is brief we are maybe 20 years away from a society that only uses radio waves for astronomy.
Tv signals are thought to be the most likely detectable evidence with our technology and its already becoming obsolete for us satellite cable and online programs have all but won.
So say for example a civilisation is 500 years ahead of us in technology we wouldn't detect their radio because they wouldn't be using it.
There are a few hypothetical detection methods being considered such as the possibility an alien race needing more and more energy would build a dyson sphere around their solar system in theory (common english version) that would change the light emission of the star and be detectable. I find this unlikely since we are very close to cracking fusion which is going to kill off solar energy so that would rely on another civilisation more advanced than us but having found no better way to get their energy than building a massive shell around a solar system. Fusion or anti matter would be more likely.
Realistically the best option is finding planets capable of life this is being done but wont tell us if theres life just that life with our definition of requirements could exist there. We would need to send probes for more info and that would require new communication technology we cant maintain contact with a probe further away than pluto atm let alone lightyears.
Probably the best hope short term would be accidental discovery of us by a space traveling race looking to colonise planets with our type of atmosphere.
However i do think theres life on mars bacteria only and we should know in a few years an unmanned probes designed to find methane producing bacteria is on its way there and theres also an unmanned mission to europa being planned but likely anything upto 20 years away nothings been finalised.
There should be a manned mission to mars in the near future also upto 20 years at most.

Long time no useless drivel chicky. Your wrong as usual:
1 your explanation is not in your book therefore not the word of god therefore irrelevant unless you want to claim you hear voices.
2 the explanation itself is specious why would an omniscient being make 300 septillion stars plus 600-1200 septillion planets knowing full well even with the impossible theoretical light-speed engine we could not reach 90% because of their distance and acceleration. Could it be the reason no ones 'talked to gawd' for hundreds of years is hes at other planets cos he got sick of the murder rape and other evil atrocities committed by christians in his name. Nah more likely because he never talked to anyone because he did not exist.
3 you could attempt to claim stars were made for decoration but then you have the problem of why did he make planets. Weve discovered 500 already. We have not been looking long and its incredibly difficult first you have to stare at stars looking for a teeny weeny wobble when the planets gravity makes it move this is not constant its at particular times in the orbit so you have to look for a damn long time or get lucky. The next step is trickier you have to wait till the planet is between its star and us then you do a spectroscopic analysis of the light and compare it to the stars normal spectroscopic analysis the differences tell you what gasses are in its atmosphere.
What am i doing you wont understand half of what i wrote so im done after this last important part.
We found a near earth planet first paragraph and link follows notice that percentage for chance of life 1 freakin hundred per friggin cent:
'Is this the new Earth? Astronomers discover planet just 20 light years away with similar atmosphere and gravity which has '100% chance of life' - and may contain water'
http://www.dailymail.co.uk/sciencetech/article-1316243/Is-GLIESE-581-g-n...
Now if/when we find life there are you going to claim god made the life there before or after you claimed he made life here. In genesis the mysterious unknown author couldnt decide if adam and eve were made before or after animals so claimed both.
As for that you cant say how life stared nonsense we have created artificial dna using inorganic molecules dude that proved without a doubt dna can be made. We created a bacteria from scratch the only thing we didnt crate was the cell wall but we will learn how to do that too.
Before you claim it proves life needed a designer nope just because we did in years what can happen in billions of years by purely random collisions does not prove it needed a designer only that we did it faster.
Besides we found amino acids one of the building blocks of life inside of (not outside so no contamination) meteors (a meteor is an asteroid that landed on the planet) that are thought to be left over from the creation of the solar system. Its considered a fairly good probability that meteors with amino acids started the process.
So we can claim we think we know how it happened but with no evidence or possible observations or predictions it has to be just a hypothesis
Thats the thing about science a hypothesis even if every single scientist thinks it is 100% true a hypothesis cannot become a theory without evidence or observations or predictions it must have atleast one of them and even then may not become a theory but if it had two or more it is virtually guaranteed provided its peer reviewed ofcourse. Hint thats why creationism is a mere hypothesis no evidence or observations no predictions plus no peer review. Peer review has to be by unbiased professionals (evolution has done this but creationism tried to cheat with a christian staffed science journal funded by christians) and creationism only works if your already a creationist. Unlike evolution which has a freaking crapload of all three all peer reviewed plus real world uses checkmate.