I thoroughly agree. I am early 40s and will end up without children now not through design, but because I wasted my fertile years with an incapable partner. He was incredibly loving, thoughtful and (ostensibly) feminist, but ultimately not someone I could commit to having a family with because he couldn't be counted on to do the basics, like complete qualifications that were well within his reach, hold down a job, do life admin or even reliably get out of bed in the morning. He is now with a woman more than a decade younger than him who I guess has plenty of time for him to get his shit together.
I am not remotely bitter, BTW. I could have left him and had children with someone else. But I agree with this sentiment. He is white, comes from a well-off family that supports him when he needs it, and there was never any pressure on him to sort his life out. It has been incredibly easy for him to find other women on the internet. He is intelligent, attractive and kind. I knew enough to look out for aggressive, unfaithful, unpleasant men, but not incompetent ones who refuse/feel unable to participate in adult life.