Perhaps people that were born in the 1950s are able to remember how normal it was to see people smoking almost everywhere. The younger generation would raise an eyebrow or ask the manager of the place to ask the person to step outside and smoke elsewhere.
It is easy to remember back in the day where tobacco is ubiquitous and parents smoked in front of their children. In turn, the children picked up from where their parents started and took the addiction to a whole new level. But it is not true anymore.