Earlier quoted context omitted.
Drug gangs destroying South America, tens of thousands dying due to Fentanyl-laced pills, lost tax revenue, huge taxpayer expense, petty crime used to fund overpriced drugs, are all signficiantly worse things than what you are afraid of. It's a laugh to see all these right-leaning people who pretend to be libertarians (not sure if that's you, but in general) but are actually in favor of a large state and authoritaria…
How is there any lost tax revenue if it's not taxed? Why should everything be taxed be default?
"Why should everything be taxed be default?"
The opportunity cost point was the least important in that list. If you don't want to tax it, that's fine with me.