We've been dark for thousands of years, and we've been emitting waves for just a few centuries. Who knows if we will switch to optical/quantum communications in a century or two, and we'll completely stop emitting radio waves, and then our "wave emitting" period will be just a blip in history.

Most likely they just don't care, same thing as we don't care about the ant nest in our backyard. We don't worry about their wellness, nor we think about contacting them or trying to help them with better technology.

In order for them to wanting to contact is, they might need to be just slightly more advanced than us. But then the chances they can get here are next to none.