I think the big change is that back in the 40s/50s/60/s we were all in the same boat within our communities, we cut our cloth to suit our means, helped each other out (eg my Dad did anything electrical for the neighbours, man next door, who was a 'shilling a week man' and therefore had a big car, was the local, free taxi service, The slightly better off retired couple at the end of the street had a phone which neighbours were welcome to use for vital calls, those who fished distributed their catch (no fridges or freezers) garden produce was shared too. We had over 300 wedding presents, nothing very expensive, everything from a washing basket with pegs and washing powder to a lifetime supply of sheets, pillowcases, towels and dish towels because the Co-op happened to have a 'white sale' just before our wedding. We did use HP but on a strictly 1 item at a time basis. It was better to save up for large purchases/holidays/Christmas because there was worthwhile interest on savings and high rates of interest on borrowing or HP.
But society has changed totally. We are no longer mainly in the same boat- the gap between the income of the poorest and the well off is ginormous and quite random. Even for retired folk - my widowed sister has a huge civil service pension + half her DH's pension + a full state pension with added credits from her DH's contributions. Because DH was self employed and I was denied a pension from the Bank I worked for because I was a married woman, and then worked in the voluntary sector, we have no 'works pensions' only miniscule private ones and neither of us has a full state pension. Young people today are encouraged to spend on their credit cards, hopefully clearing the balance each month, but if illness, accident, unplanned pregnancy or redundancy strikes, they do not start from a level playing field or with at least modest savings to tide them over. Instead they are plunged into debt immediately, with interest on interest adding to the sum owed each month and no choice but to keep using the credit card for essentials and to make payments on mortgage, mobile phone, internet, TV, boiler, car, etc. contracts.
Changed days indeed - truely a time when the rich get richer and the poor get poorer.