Of greater import is the fact that sending signals entails a great deal of patience. If the nearest civilization is 100 light-years away, we will have to wait 200 years for a reply. To date, only a few, mostly symbolic, intentional messages have been sent. The simple picture that was transmitted in 1974 from the Arecibo Observatory described our solar system, the compounds important for life, the structure of the DNA molecule, and the form of a human being. The message was transmitted in the direction of the globular star cluster M13, about 21,000 light years away, so clearly any answer will be a long time in coming.
Serious broadcasts require serious commitment.
Only when we are willing to commit the resources to build a powerful, long-lived radio beacon can we be said to be taking serious steps to actively get in touch.