The days of one person having a normal job and buying a 3 bed semi in leafy suburbia in their 20s are over unfortunately
I don’t know when these days were. My parents were married in 1950 in their 20s , they could afford a small terraced house in the inner city of a northern town. But my father had a well paid professorial job ( I’m assuming that’s not what you mean by a normal job ) and my mum worked in an office for 13 years before she had kids.
They didn’t move up to a 3 bed semi until they were in their 30s and he had been promoted to a senior job.
Other relatives who got married in their 20s lived in small flats and had two incomes ( eg salesman and secretary ) .
In laws got married in mid 1950s , also had two good jobs ( surveyor and secretary ) and they had a terraced house in a new town.
Most of them didn’t have the luxury of a university education, they were working from 16 or 17. So by their late 20s they had 10 years of work behind them.
None of these couples had two cars, overseas holidays or went out for meals every weekend - things that many people now see as basics. Their social life was going to friends/ family for drinks or meals , or a few drinks at the bowling club. They went out for dinners on birthdays .
When they got married their homes were kitted out mostly with hand me downs and a few wedding gifts. They didn’t redecorate Every few years or have new bathrooms and kitchens every few years when they went out of style. They had a few outfits and their work clothes.
I think there’s a lot of talk about how easy it was then but they had very different lifestyles and expectations . They spent more on their homes and far less on consumer goods, hobbies and entertainment.