My grandparents never borrowed or owed anyone, they always saved for what they wanted and my GF got in a right state when my Mum joined a savings club at work and had to 'borrow' from it twice a year as per the rules.
In the 50s my Mum wanted to buy a television from Radio Rentals who were offering a good hire purchase deal. However, because she was a single woman they refused to give her a contract, even though she was in well paid full time work. She was furious and wrote to the Daily Mirror reader advice service. They took up the matter on her behalf and Radio Rentals agreed to give her a contract. She made the payments for 4 months then went into the shop (with me in tow) to pay off the balance in cash. The manager asked why she had wanted a credit agreement if she had the cash to pay? She said it was a matter of principal, they had treated her differently just because she was a single woman. He said 'Good for you missus' as she left. Mum laughed because 'Mrs' was just what she wasn't and the cause of the problem in the first place!
DH and I have had lots of loans over the years, from our mortgage to mail order catalogues, and sometimes we struggled to keep up with them, but we managed somehow, often robbing Peter to pay Paul! My Mum was horrified when we took out our first mortgage (£15000) when we married. She just couldn't comprehend large amounts of money and was convinced we'd end up in jail if we couldn't pay! She never had a debit or credit card and only opened her first bank account in her 70s.