For me, the issue with Coke isn't that one Can can kill you. It's that I never seem to be able to drink only one can.
When I drink Coke, it becomes the primary way I hydrate. So five, six cans a day is not uncommon.
I can't speak for everyone, but I've known plenty of other people who end each workday with 5+ cans of Coke on their desk.
Personally, when I was drinking coke regularly, I was >30% body fat. Now that I've cut Coke completely from my diet, I am ~15%.
Honestly though, I would love for these facts to not be true for me. I miss Coke dearly. It's my favorite drink.