Without a doubt the initial smoking ban had a negative effect on the pubs in the village I lived in at the time, especially the mid week trade. The pub quizzes and games nights weren’t so much fun when half the attendees stopped coming! Within a few years at least a third of them had shut, a large part down to the drop in trade caused by smokers staying at home.
Things change though and in my current town the pub scene is probably as busy as it ever was, albeit in smaller bars rather than the tradition big pubs. The surviving pubs in my old village seem to be doing reasonably well too these days.
As for an out right ban, from my experience so few people seem to smoke now that I’m not sure it’s worth the agro, is it? If you included vaping I might be more interested but that’s unlikely to happen. I certainly don’t have strong enough feelings to get over excited either way tbh. Having spent a good portion of this year coming in and out of Leeds General Infirmary though, I have also witnessed the people standing outside smoking who are clearly dying from something that smoking isn’t going to help. Blows my mind that one!
For the record, one time 15 a day Marlboro Light smoker, stopped 12 years ago, never been tempted to vape.