Plus the fact that 95% of the country cant grow outdoor for numerous reasons.
I literally shudder at the thought of it, first it's totally illegal here in my state which almost certainly will be the last tiny spot of land on the entire North American Continent from the north pole down to Central America that will still have illegal cannabis.
Second, the environment here is insane, wildly hot and humid in the summer, the full 7 plagues in biblical proportions, every bug and disease known to man is lurking right out my window.
No way in hell could I grow a single plant here even if it were legal, it would never make it to harvest.
Meanwhile indoor is a total pleasure, grows itself, I just sit back and watch.
I spend about $32 a month growing autoflowers and about an average of $23 a month for photo-periods.