Now that it says that smoking is dangerous to heath,why do they manufacture them?

Now that it says that smoking is dangerous to heath,why do they manufacture them?
Now that it says that smoking is dangerous to heath,why do they manufacture them?

Now that it says that smoking is dangerous to heath,why do they manufacture them?
既然说抽烟有害于健康,那为什么他们还要生产出来?

既然吸烟有害人体健康，那么为什么人类还要生产烟？

既然都说吸烟有害健康，为什么他们还要生产烟呢?