YABU. No-one was earning £90,000 a year in the 1990s. (Well, very very very few people, like supermodels and film stars and pop stars and actors etc...) Someone is yanking your chain. I was on £15,000 in the early 1990s, as a secretary, and that was classed as a good salary then. (It would be around £40,000 now.) £90,000 some 30 years ago would be £250,000 now. An infinitesimal amount of people would have been on that salary. Even the Senior Manager in my company was only on around 2 times more than me (so like £30,000-£33,000 or so - (£80,000-£85,000 or so in today's money....)
Also, whilst property prices were cheap compared to today - even taking inflation into account, everything else was much more. Video recorders, TVs, cookers, fridges, washing machines, tumble dryers, microwave ovens, kettles, toasters, and all manner of electrical goods were really expensive. So much so that many people had to rent some of them. Also clothes and shoes, they were more expensive too. Although I have to say, everything was a much better quality back then. Same with houses. Many that are built now, especially generic starter homes are really poor... And food, that was expensive too....
Another thing, everything we needed for the children - pram, cot, baby seat, clothes, baby milk - for when they came off the breast - and all manner of things that we needed for them cost much more than they do now.
Not everyone who was born before 1970 had an easy time! It's such an ignorant and narrow minded comment, to assume 'the older generations' had an easy life.