Ds is 19.5, barely a teenager. He's a student, we pay his rent and sundry extra sums as he hasn't yet been able to find a job. (I have pressed him hard on this) AIBU to grumble or even withhold extras when I see him spending on vapes? He resents it. I'm just not sure how much freedom I should leave him to spend, obviously I can't stop him, but I could be less generous.