The one argument I see that should be made is that people's actions have a direct repercussion on others in the NFL because it's a contact sport. In baseball if someone juices, they're running faster or hitting a ball harder. In football, they are taking those enhanced bodies and slamming them into other people who may not be similarly enhanced. I don't care about baseball players juicing. If they want a competitive advantage at the expensive of their health, it's their problem. But in football you're not just taking that risk on yourself, you are now forcing others to deal with the repercussions of your actions.