It is also hard to convey, how hard it can be, making the transition from only taking care of yourself, to also being 100% responsible for someone else. Combine that with little sleep and relationships that were not working very good before and it is no wonder so many children end up in foster homes, or with traumatic experiences of neverending fights of their parents.
So no, the conditions don't need to be perfect, they never will be. But you have to have some stable base. And consensus with the partner on how to raise a child. Otherwise parenting won't be meaningful, but hell on earth for everyone involved.