I chewed leaf tobacco from about 16 on up (til 30 or so).
I went out back backing at age 19 or so, and figured Copenhagen would be lighter to carry. After lunch on the trail pulled some out and stuffed under my lip. After a short while I spit the chew out, and fell asleep on a rock!
:^D
A few buddies of mine chewed. I always found it to be rather disgusting, but hey, free country. I was always careful during parties when guys were chewing.
On one occasion there were some people at the house. This one guy wasn’t paying attention and picked up a styro cup to take a drink. You can guess the rest. I never made that mistake.
I haven’t chewed Copenhagen for thirty years but I still get the urge when somebody opens a can near me. It smells good.