My worldview wouldn't change a whit.
We're already aware of life on a planet. That's what we are. Us, and cats, and dogs, and everything else living here. As humans, we're already aware of the great diversity of life even sourced from just the one planet. Likewise, the range of intelligence. Life, intelligence, on some planet? Spacecraft? Interest in exploring? Nothing groundbreaking there. Not a thing. Already known facts. It happens; we've watched it happen.
So, another case? Ok. Interesting? Sure. Absolutely. But already a 100% fit with what we know. The whole shebang is going to be about things to learn in the areas of culture and technology. Just specifics. The rest, we already knew.