I'm a late Boomer, on the cusp of Gen X.
Bad:
Smoking was considered normal and permitted everywhere. Public transport, restaurants, in the cinema, in the staff room at work.
I grew up not seeing women having many opportunities in competitive sport.
I wanted to be a skilled manual worker, like the men in my family. I was told, "Girls can't do that."
Sexism was open and endemic. By the time I left school it would have been illegal to advertise different hourly rates of pay for men and women doing the same job, but this was not the case for earlier Boomers.
Likewise, by the time I grew out of getting pocket money I was able to have a chequebook without my dad having to vouch for me, but this was not the case for earlier Boomers.
For the first two years of my marriage, my husband could have raped me without fear of prosecution.
A lot of institutional misbehaviour went on, particularly male teachers and university lecturers flattering vulnerable female students into their beds. Now, they'd be disciplined and probably end up in the tabloids. Then, folk just said the girls had asked for it.
Limited contraceptive options and deep shame associated with becoming pregnant outside marriage. Midwives denying pain relief in labour to unmarried mothers.
The food was nothing to be sentimental about. For most of us, it was boring and stodgy.
1000 calorie diets. Half a grapefruit for breakfast.
Bri-Nylon sheets and blankets and the ritual of bedmaking.
I remember a lot of strikes and power cuts, although as a younger Boomer this brought the excitement of reading by candlelight and Mum making bread at home instead of buying the flabby white sliced that was our usual fare.
No internet and no social media. Having to go to the library for information (or visit a friend whose parents had been suckered into buying a set of Encyclopaedia Britannica) was a pain in the neck.
In the UK, non-white people were likely to get stared at in the street, and casual and targeted racism were commonplace.
Where I grew up, sectarianism was prominent in a way that is no longer the case.
Good:
Fewer people went to university - but there were better opportunities to get into a decent career straight from school, and for those who did go to university there were no fees to pay and a student grant that you could, at a pinch, live on (I know, I did). And Deeds of Covenant ...
And when you left school and got an entry level job, you could live on your wages.
Drug taking was exceptional rather than mainstream.
Limited television channels, a predictable time for every type of show, and the television went off at night. (Not everyone would consider this a good thing.)
The ability to be uncontactable outside office hours.
Much better availability of good council housing.
Car ownership was exceptional, towns and cities were cleaner and safer, and public transport was cheap and reliable.
I went to very ordinary state schools, and my impression is that behaviour and discipline were better and expectations higher even than when my own children went to school in the 1990s/early 2000s.
Public parks were well laid out and maintained.
Clothes and toys were much less gendered. In photos from the 1960s and 1970s, my sisters and I could have been either sex from the way we were dressed, and the toys in the Christmas Day photos didn't tell a tale of a house full of little girls.