"Millennials aren't having babies" doesn't ring true to me. Most millennials I know already have children. This could be a regional phenomenon. In general, rural areas have more children than urban areas. It's also up to how individuals perceive children.
I also have a lot of friends with kids, but I'm basing this on all the articles about the declining birthrate with our generation, not my own personal experience.
In my opinion, the more left a person is, the more often I've noticed the view that children are an inconvenience to oneself rather than being something desirable to nurture. I'm not entirely sure why that is the case, it could just be, again, a regional difference.
I don't agree with this. People on the far left can have the nurturing urge just like anyone else. It's likely more correlation not causation. People on the left wouldn't feel the pressure to have children as someone on the right might. Even if you go back a few decades to earlier generations when having kids was just the "normal thing to do" you have a lot of people having kids who did not actually want them or shouldn't have had them. I think a lot of it is more what someone feels is the normal path of a life and people on the right would be more inclined to play the nuclear family role whether it's something they truly feel enriched from or not. Regardless, plenty of people on the left also still want and have families.
I mean, we could go into it where I give an example of a Trumper aunt who abandoned her kid when he was going through a rough time versus her nephew, whom she regularly calls a communist, who is completely devoted to his two daughters.
But this is irrelevant. The birth rate is declining. "As of 2020, the U.S. birth rate was 55.8 births per 1,000 women between the ages of 15 and 44, a decline of almost 20 percent from the rate of 69.3 in 2007." I really doubt Gen Z is going to boost those numbers back up.
https://econofact.org/the-mystery-of-the-declining-u-s-birth-rate