Yes. Probability of two species meeting each other is even low. And theres another thing, I doubt if the way we search for life in other planets might be wrong. We look for signs of water and carbon. This way, we are actually looking for another species just like us. There might be life made with in-organic compounds at a extreme hot and cold places too. Maybe we were emerged cos the earth has perfect condition for life. Or maybe we just happen to emerge here and became fitting to (evolved) what ever the condition existed here
And my next question is, the pet dog we have maybe don't recognise us as a superior and more intelligent specie. In a similar way, are we going to be able to recognise a superior specie to us as superior species if we actually meet them? I doubt. What if we already has met them but we continue to ignore them without realising that they are superior? Just like all other animals ignore us?
yeah you are right, some scientist say there sould be life even in gas giants like saturn and jupitor.. but reason why scientinst look carbon and water is that we know once it occured with them(here on earth) so there is more chance that life emerging on similer condtion to earth...
yes recognizing superior intelligent species can be tough. they could be simply waves ( without physical bodies) or anything of that nature...

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