tobacco effects on brain The Nicotine (Image: Elliot Stein, National Institute on Drug Direct and Indirect (via nNOS)

Whilst the liver has remarkable regenerative capacity, the extent of recovery depends on the degree of existing damagesimple steatosis may be reversible, whereas established cirrhosis involves permanent structural changes, though cessation can still slow further deterioration

Bacteriome of Moist Smokeless Tobacco Products Consumed in India With Emphasis on the Predictive Functional Potential Mohammad Sajid, Sonal Srivastava, Amit Kumar, Anuj Kumar, Harpreet Singh, Mausumi Bharadwaj Frontiers in Microbiology 6

(This is only a way of talking since they obviously expect to derive more benefits than costs from smoking.) But what about secondhand smoke

They provide income and stability in volatile markets