I think Marijuana is still not legalized everywhere in the world because the tobacco industry doesn't want it to be. It has less adverse effects than tobacco and no performance enhancing effects.
Therefore I have nothing against athletes who use pot, just don't get high an hour before the competition starts.
edit: ^It seems I kinda stole the beginnings of my sentences from you.
Rookie Hammer Squad 2015
Frankie Edgar - Dominick Cruz - Jorge Masvidal - Cat Zingano - Holly Holm