"You look like a girl with a secret," Matt said. "I think it must be the smile." She moved closer to him, which was very close, and lowered her voice… - Larry Niven

Mother Nature doesn't care if you're having fun.

“I didn’t know you were such a fighter,” Eviane said.
“Yeah, well, neither did I.”
She smiled shyly.
“Does that make a big difference?” he asked hesitantly.
“Always,” she said. She stared at that bank of fog as if it concealed answers to every important question. “Oh, girls say that they want strong sensitive men. When we can’t find both, we settle for strong.”
Some part of him resented that. “Evolution in action?”
She nodded. “Sure. Deep down inside, we all know that something like this could happen. That the civilization we’d spent so much time and money building up could all come toppling down. And if it did, what would get us through is strength.”
“Not just physical strength, though.”

We've fallen way behind. Building one space station for everyone was and is insane: we should have built a dozen.