I think the lack of consumerism and materialism is the main difference I remember between the 70s and now. Everyone's houses had mis matched carpets and curtains and old bits and pieces of furniture gathered from here and there. If someone bought a new sofa the neighbours would come in to admire it.
Kids wore hand me downs as a matter of course and there was no such thing as children's fashion.
The vast majority of people holidayed by the seaside or went to a caravan somewhere. Very few went abroad or stayed in hotels.
Christmas meant a main present under the tree, something like a doll or a pair of roller skates, and a few stocking fillers. One bicycle or scooter was often shared between several children, and new toys only really happened at birthdays or Christmas.
People saved up for things, no one had credit cards and in general people lived within their means.
It's so different nowadays. Young couples starting out have perfectly furnished houses, and older couples downsizing find it very difficult to get rid of their furniture because younger people want everything new.
Many children have playrooms piled full of toys, mounds of stuff under the tree at Christmas and expensive gadgets from a young age.
Several holidays a year has become the norm, many paid for using credit cards. It's no longer enough to have a car, the year and make are important. Gadgets and machines go out of date almost as soon as you've bought them, and are replaced by bigger better versions.
We have more stuff, but I don't think we value things as much as we used to. Everything's disposable, nothing's cherished, repaired, made to last.
I'm generalising, I realise, but I do think we were better off as a society when we had less choice and less pressure to keep buying more and more stuff.