Cigs are pure poison. The difference between when I smoked cigs and after I quit is night and day. They add the 'danger' warnings so they can keep charging you more for the pack of cigs throgh taxes.
The extra ink on the cigs costs them 5 trillion dollars extra per year (which the cig CEOs have stocks in the ink company) so they have to make up for it by charging you more in taxes and overhead costs.