That NASA has done a zero-gravity intercourse experiment.
The 50th shuttle mission had married couple and it included spacelab. A pressurized and habitable module that could be isolated from the rest of the crew. Even before launch they were asked if it would happen, and denied it, as NASA has afterwards as well.
It doesn't help that several of the listed experiments was about human health, developmental biology and included animals and eggs to study ovulation, fertilization, cell division and growth.
Now that you bring it up, of course we've studied whether babies can be made in a spaceship. It’s literally the only other option for interstellar travel besides cryogenic freezing, which is far more sci-fi than spacesex. Or spacex for short.
You really don't want to go down that line with a guy on the spectrum that has spent literally half a century thinking about space travel. You really don't.
We can't even keep the most prosperous nation on the planet from falling to fascism in 5 years how the FUCk do you think we're gonna keep an isolated crew of highly intelligent people with access to the highest tech available?
I know enough about human nature that the only way this works is if it started as a die-hard authoritarian religious movement and even then I only give it 1 out of 4 chances of making it 100 years into the mission
Transitional periods take time, and are generally pretty messy. Most of that is because comfortable humans are inherently lazy. The rich managed to stave off a transitional period that began in the mid 1800's for almost a century with specific concessions to the working class, that they immediately started clawing back, after WWI and WWII. They can't hold it back with neoliberal rot anymore, so the transitional period may now continue.
It will get better, just maybe not within our lifetimes.