Gas, would you prefer the doctor take care of their chronic pain before surgery by using some heroin? Because opioid-based pain medicine is heroin.
Do you think Klay, Steph, etc. sit around doing heroin? There's a really great chance MOST professional athletes have had a pain medicine prescription in their career and have used them before, during and after games.
Marijuana affects different people differently, as far as dopiness a goes. Me, if I smoke pot, I'm a dope. Not the same person at all, I function a few levels lower than normal. Because I realize I'm slower than normal I get really self-concious, get anxiety and don't want to be around other people. So for me, I would never smoke pot in a social setting or before I had to do anything remotely important. But my wife is not like that at all. I'm not saying she's her "best self" on pot, but the effects are not the same as they are for me at all.
So I don't smoke pot. It's not fun for me, it doesn't "help" me with anything at all. But if I had to choose between pot and opioids for pain, I'm choosing pot all day every day. Opioids are bad. They're highly addictive and they have ruined millions of lives, often people who just had some injury or some pain and their doctor prescribed them opioids and then before they even knew wtf was going on they were essentially addicted to heroin.
You're looking at pot like a party drug, but the fact is that many people don't use it like that. It can be used like that, just like opioids, or meth, or cocaine, or alcohol. But not everyone is hot boxing and watching Cheech and Chong when they smoke pot. And in places where pot is legal, smoking it becomes less and less the way people do it.