Anything further than a 100th of a light year past the edge of the solar system we aren't going to be able to send a probe to so why bother except to provide su

Anything further than a 100th of a light year past the edge of the solar system we aren't going to be able to send a probe to so why bother except to provide subject matter for sci-fi. Even if we see that there is intelligent life on that planet there's nothing we can really do about it. If they are a few hundred years ahead of us technologically they know about us and don't care. If they are a few hundred years behind they won't be able to receive our transmissions. I know science nerds need a wondergasm, but until we get some decent deep space propulsion technology it doesn't freaking matter. Seriously, except for some cool TV shows what tangible benefit had deep space cosmology brought us in the last 40 years?