Or, one could just avoid coke altogether.
if you have the junkie/addict in your blood - if you have blood relatives who are addicts, or if you are easily addicted to work, sex, other things... you might find out ya cannot just use recreationally.
I'm no expert - I've never touched tobacco, weed, or any drug, but there are a lot of junkies in my family. I've seen my little cousins up north grow from good little kids to straight junkies because it's just in their blood, the addict. they try coke in college like many kids do, and they just keep doing it. Others have the ability to just put it down when it's time to get back to work/school on monday. Some families don't.