The question isn't about whether pot is harmful. Hell, we've seen people kill themselves with water. Of course it can be harmful to certain people just like alcohol can be.
The question is should it be denied based on the fact that it might be harmful to some but beneficial to others, just like alcohol can be?
Do we want kids doing it, people driving on it or operating difficult and possibly dangerous tasks on it? Of course not but citing the exceptions doesn't affect the rule. Legalizing it hasn't wreaked havoc and opened the gateway.
The largest growing segment of society smoking weed now is the 65+ crowd. It has been proven to have benefits to the aging process and handling certain ailments that come with aging. I am in that crowd but choose my self medication with Demon Rum and if it were legal in Texas, probably wouldn't change. However, when I used to smoke it, a long time ago, I wasn't this age with these ailments so I do not know the temporary relief benefits of it. But I do know quite a few people that do and they used to take pain meds and I sure as hell know the hazards of that.
Funny how this discussion started about a guy, one guy, in the NFL that decided pot was more important than football, one guy out of how many that smoke it? And that guy seems satisfied with his decision, his choice, his life.