Even in your anecdote things are far more dire than you portray them.
"We just had to work extra hours, live like peasants, and put off having kids. It's totally doable!"
Sure it's doable, but if you're making all those sacrifices and are still at the point of putting off having any kids till the last minute it is in no way reasonable. And what of people slightly worse off than you? They just need to put off kids till their late 30s, or even early 40s? We are at the absolute limit of what people can sacrifice to afford a home, spinning that as "doable" is insane to me.
Your anecdote reminds me of a fun little story from youth. In grade school they brought in some finance guys (can't remember specifically, bankers probably). They told a story about a little poor lady who worked as table cleaner. She toiled and slaved for 40 years. Took every extra shift, never spent a penny on luxuries, lived in the smallest shithole apartment possible, ate beans and rice, the works. But boy oh boy, when she was ready to retire at 60 she could afford a nice house on the beach! Isn't that incredible, what an admirable little tale (no mention of family or kids here either btw).
Yes goy, anything is achievable if you are willing to give up your humanity and become a pure economic unit.