Tobacco use - despite its visibility and despite being extremely addictive - went down a lot. Legal and normal are NOT the same thing. The biggest problems arise when normal is illegal as it undermines the law and maintains delusions about what is going on in reality.
In the EU 1 in 4 adults smoke tobacco daily[1]. It sounds pretty normal to me. In practice when I commute daily, I always need to hold my breath several times each way, just to avoid the stench.
