I must stress I was not trying to criticise anyone's parenting choices, nor do I struggle to understand what we don't just do what children want. It was a more a case of I felt like we were going against nature and that's why many struggle with this.
It's strange that literally the only aspects of modern life that anyone cares about "going against nature" are those to do with childbirth and baby care.
Do you worry about "going against nature" every time you get in a car, turn on the central heating, look at your smartphone, eat food out of season, sit on a toilet, or do virtually anything else?
We are a long way from living in a cave, and life isn't about survival in difficult conditions. Children growing up in traditional societies are fairly likely to die before the age of 5, and if they manage to survive, they are subject to very harsh discipline which is necessary to survive under those conditions. It's a far cry from today's child raising norms.
Nothing wrong with sleeping in the same bed as your child, but nothing wrong with not doing either, people just do what suits them and their family the same as any other aspect of modern life.