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Not sure I should respond. We are Nothing in the universe, we are so selfish it has become background noise we ignore.it is so egotistical that any other species could experience reality in a way that makes sense to us. If we made irrefutable contact with an "alien civilization" our own governments would mess things up and regardless become a new excuse to tax us even more and remove a few more freedoms in the guise of protecting us. So many are already comfortable at losing so much in the past decade or two.
Searching I think is a good thing, it contributes to the sum of human knowledge and improving technologies. Spamming out messages we are already doing, doing more i see is a waste of time and just additional "noise" to non-optical forms of astronomy. Plus of course the legal wrangles over copyright ownership of the information being sent (pharmaceutical companies "own" portions of DNA already, preventing rivals from producing medications even when medical science has little to offer so many existing afflictions), then there are the broadcast licensing fees for whatever spectra the information is broadcast. The project would be a mess of people trying to profit.
I for one would love humanity to find complex life elsewhere: a plant, pond scum, critters. That alone will answer so many questions and pose so many more. The implications of finding lifeforms that are or are not carbon based. Have or don't have DNA. Have recognisable physical characteristics. We know nothing really. And its sad we don't value the nothing we do know.
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