Assuming the designer didn't use natural processes...
Well then, it still doesn't seem designed for us. The designer seems to really be into stars and watching them expand, die out or explode.
You really think Earth is the only planet with highly intelligent life on it?
I struggle with it. There is no reason why it shouldn't given that the universe has all the elements for it. But the harshness of the universe and the unlimited amount of ways life wouldn't be able to survive, couple that with this planet where we know life exists and the limited time it's been here and the extinction hurdles it was LUCKY to get past, I see basic life itself beening hard to survive let alone getting to the point in the evolutionary tree where you find intelligence. One less meteor hitting the Earth and we wouldn't be here.
Basic microbial life I expect is abundant. Things that swim are less but probably likely. Anything after that I see as very limited, if it exists at all.
I certainly don't believe if there is other intelligence that it's visited us here on Earth.