It's a pros and cons thing. The pros in this case are our upright posture with narrower hips that let us cover long distances more efficiently than most of the rest of the animal kingdom. We can even do things like carry food to eat while walking, which something like an antelope would struggle with. Then a second pro is the whole big brain thing. These two factors did let us take over most of the planet over the course thousands of years, pretty quick work, really.

Then the cons are high mortality in birth, and taking something like 10 years after that risky birth to become even semi-functional at a practical level.

Do people before modern medicine just die?

1. Yeah, actually. A lot of them did.

2. We have actually evolved to need medical care in child birth for various reasons. The pelvis has shrunk and babies heads are larger now than they were thousands of yesrs ago, making natural birth a much more complicated thing than our ancient ancestors went through.

Meanwhile, some animals give birth standing up and the baby is ready to go shortly after. Nature is wild.

Oh yea I have depression…

I had wondered.

A female friend once remarked to me that giving birth makes as much sense as exiting your car by crawling out through the exhaust pipe.

My sister's first pregnancy was high-risk and she needed a c-section. She went on to get pregnant twice more. When I asked her why take the risk, she told me "because I get a kid out of it". 🤷‍♀️

Intelligent design my ass

No, literally. My ass is a counterargument to intelligent design. Bruh I had to have surgery as an infant and still have chronic constipation.

Natural Selection doesn't care if any individual is happy with its situation. All that matters is if the individual manages to reproduce successfully.

Miserable people having miserable children who go on to produce more miserable children. As long as you don't get so miserable that there isn't some miserable person out there willing to bang you and create more miserable people despite the misery, your suffering doesn't rate a second glance.

Evolution gets it right enough. It's the universe saying, "Meh", and going back to bed.

Women die in child birth now pretty regularly.

Modern medicine has greatly improved things but giving birth is pretty crazy.

Beyond all the defects and things you talk about human babies are absolutely helpless for 5 years at a minimum and need parental care until about 15 years.