Started back in 1975 in high school with Skoal at about 50 cents a can, would buy a roll of 10 cans and stick them in the freezer.
Went off and on with this awful habit until I was 40 years old, smoked cigarettes for several years as well.
Cigarettes are easier to quit. I could chew anywhere and nobody knew. I never had to spit, just kept enjoying that flavor anywhere, anytime. I couldn't understand the young dudes who spit into bottles and cups, very disgusting! No need to have that shit where it would disgust others and then somebody would pick the wrong beer bottle and that warm spit would go sliding down some poor suckers throat. At parties, it sometimes would be a innocent girl who suffered this bad experience.
Anyway, I once loved the stuff but I'm sure glad I found the strength to quit.