Thanks for this breath of fresh air into the smoking debate.
We all have our pleasures. For me, enjoying tobacco (usually in a pipe) is something that makes life worthwhile.
Are there risks? Sure. Just as there are for enjoying sugary foods or over-indulging in alcohol. Or commuting every day on a highway and breathing in all those exhaust fumes.
There are few enough pleasures in this life. We should embrace and enjoy the ones we find.