[DanBC]

In the UK it mostly was increased prices, coupled with free smoking cessation services, and with changes in law to make smoking illegal inside many buildings (workplaces, shops, pubs, cafés etc).

Vaping was useful to move remaining smokers to different nicotine delivery mechanisms.

[moomin]

Pretty sure the pub change was huge. It also practically redefined what pubs are in the UK.

[zeveb]

I really miss smoky pubs. They were nice and comfortable in a way the modern brightly-lit bars just aren't.

I don't mind that the modern bright bars exist, I just wish that I could have an old snug with a pint of bitter and smoke a pipe or cigar.