But those who cry loudest and most frequently about he difficulty the suffering have obtaining medical cannabis relief are the "recreational" users who see it as step one in legalizing general usage.
If we make the users responsible for the consequences of their usage, then no harm, no foul. But you know what will happen. When a percentage of users have toked themselves into befuddled unemployability their behavior will be designated a disease and they'll go on the public dole. That means you and I will be paying for them. I can't speak for you, but I don't want to pay for them!
That is not reality. People you know now that you view as very productive and successful in their career toke regularly.
That has already happened. And there's no reason to expect an increase with legalization, because the new smokers are people responsible enough not to have smoked when it was illegal.