I think the term "addictive" gets tossed around too casually. It's as if that has universal application and it does not, it is not the same for everyone. And there are different variations on addiction, emotional, mental and physical. Pot does not have the physical side of it like alcohol, cocaine, heroin, meth and pain pills but with certain people, it has the other two and that can be just as strong as the physical side of it.
Any substance than will affect the brain and give pleasure can be addictive for some people. Whether that's to avoid pain or seek pleasure, what drives that is different for people.
I have spent time with several people in rehab and various forms of recovery, including my younger son, and once they been diagnosed with addictive personality, they have to be careful of anything that might set off those triggers. That's why people going through treatment have to avoid all of it, there is nothing safe for them.
For some people, pot is a boon and they can handle it without problems although they're having some issues in CO right now with the powerful stuff and long term users, but for others, they're better off to avoid it. It is not the "harmless choice" for them.
But in all fairness to pot, I don't think it makes football players that like football prefer pot to that. Did Irving ever love playing football? McClain? Todd Marinovich, #1 pick, chose to smoke pot and surf, he never loved playing the game.
We process their decisions through our own filters and think they're stupid to give up on this opportunity but that is also the money filter, I know people that could care less about money or being rich or set for life. Isn't that the opportunity? Think getting the hell beat out of you once a week, risking injury that could incapacitate you or last the rest of your life is a fun way to make a living? Not everyone, including some that do it, is cut out for that.