I had a similar discussion with my brother the other day. After multiple miscarriages, they're finally pregnant, 17 weeks in and healthy.
He worked from the time he was a teenager joining military reserves, degree in criminology and kinesiology, and finally a provincial constable around 6+ years in to get to where he is.
An hour after their latest ultrasound, his only words were: work sucks.
As a dad: I tried to take as much time as I could, to spend time with my kid when they were very young (sadly, not anywhere near enough).
The times I could during their younger years led to some memorable memories and jokes, which I still lovingly rib them about MANY years later.
I’d rather have been sight seeing or exploring with my kid, but we live in a society where parents aren’t equipped to teach their children.
So for me personally getting those 12 weeks alone with the child would be worth every penny, and can be very liberating for your wife, but the first two months were hard on me. Good luck, what ever you decide.
Here's the funny thing though. Your perspective changes when you have kids.
As a personal anecdote, we just had our first baby 3 months ago. My wife had spent the last 3 years getting her masters degree and getting her teaching certificate. She pushed hard. It was important to her. She got the email that her certification came through the day after the birth. She didn't care. All she want's to do right now is take care of her baby. That will likely change, and she'll probably work part time sometime in the future. But saying we've deprived half the population of their right to work is missing another perspective. The joy and privilege of raising a family. Yes, the efficiencies are wonderful, and for my wife (and for me), that means more time with our family.
Who is being deprived now? I would hate to see my daughter deprived of her time with Mom so Mom could sit in an office all day. And I feel like our society is suffering because kids aren't being raised by their parents anymore.