This is an oft-recited history, but I'll repeat it for this thread. My dad smoked from age 15 until 65 when he quit cold turkey. He smoked his one pipe, only buying a new one when it burned out or was about to. He smoked only Granger from the foil pouch.
He smoked all day from after breakfast to bedtime with time out for meals. He had a few years when he shifted to King Edward cigars, then back to his pipes.
He quit cold turkey when he took a second-career job at age 65 on a non-smoking campus and worked long enough there to have a vested pension.
He departed life at age 89, well into his 90th year, licensed to drive without glasses.
Also, he smoked his pipe as a Naval officer during WWII when he skippered YMS minesweepers on both coasts of the U.S. and in the Philippines during the operations for control of those islands.