> And I'm sure the kids still remained with their parents at night. Through all of our known history across all cultures families have slept together. It is only in the past few centuries that European wealth and individualism changed that.

I am sure you are so sure because you are attempting to shoehorn reality into some vague political philosophy.

> So why is this the 'better' option? What is the benefit from separating a child from their parents at night?

Privacy for one. Some people claim letting your baby cry in the other room is healthier for their development, 'etc. If you insist on being post-modern about everything lets take it all the way, what even is 'better'? Why is 'better' even 'better'?

I'll keep my individualism thank you. You do your better and I'll do mine.