OP, I'm older now (51) and my children are both adults.
For me, all these instaperfect moments around everything from elaborate pregnancy announcements, 'gender' reveals, 'babymoon' (not even sure what that is tbh) etc are all things that didn't even exist before SM required them to.
There is a lot of pressure on new mums now to bounce back and be living perfect lives with bunting and balloon arches and all.manner of unnecessary and pointless bollocks!
I have a much younger ex colleague on fb who has a now 2 year old - it's been oddly fascinating to watch...
My experience was that I didn't have that rush of love or this is my new best friend experience either but I woke up one day when my son was around 4 months old and had a rush of feeling like I couldn't live without him. It took a lot longer with my daughter and, for the first year she felt like a baby I was quite fond of but more like a girl who was always there and I was responsible.for than part of me.
Like I say, they're both adults now and we're really close, but I certainly didn't sacrifice my life for them. I give them the space as adults to live their own lives and make their own choices and I'll never he one of those women posting after having a little cry because they don't phone me often enough.
Oh, and the early days are mindnumbingly boring.
And, yes, the comments about the baby being a stranger - that's exactly how it felt.
You're not alone, OP. It will get better.