As a dad of (soon) 3, I would say that social media/etc have raised the expectations of parenting. Keep in mind that the kids aren't the only ones growing up and learning - the parents are too. And hopefully learning from their parents too.
"Being ready" to have a child is an impossibility so you have to embrace the unknown and be ok with mistakes. Kids are resilient, and many millions have had to do with less.
I understand about the impossibility of being ready. No one is ever ready for something they do for the first time. As any complex and long project, there's theoretical preparation and there's practice with its constant ongoing course correction when (not "if") something doesn't go as planned. It's not an immediate issue or reason, at least not for me.
And another thing I understand is that some people actively want to raise children. You surely do. But I simply don't feel that way. Like, there's no inner sense of calling, or desire, or any moving thought or similar emotion or drive. Nothing like "yes, I want to do it".
And doing this not because I want it, but for the society's sake? It is an idea that makes sense, but but knowing the difficulties and stakes involved, a "why not" is pretty obvious to me. I most certainly don't want to spend significant resources of my lifespan on raising a kid I didn't even want. And thus I'm really glad that it's an option.