1).- Should doping in sport be legalised?
No, because the sportspersons who take drugs would always be able to have an unfair advantage over other competitors and these might be the ones that don't consume drugs and we would have a bad reputation about the competencies besides undermine values as fair pay and teamwork moreover the first places would be for them and no one wouldn't be capable of taking off to them.
2).-Will it ever be possible to stop athletes breaking the rules to win?
No, I think that's impossible because a coach would think his/her athlete is being prepared of the best way to compete and have to set some rules that they are considering the best ones but if his/her athlete is not responsible or one day he/she doesn't arrive to the camp by their deadlines.
All the individuals are different as much as we might want them to fit our way some just don't. By accepting that having the rule won't actually change behaviour. It will create stress instead of they have good athletes they will made their athletes be fearful and stressed all the time.
3).-Are athletes who take drugs cheats or are they victims?
The world anti-doping agency WANDA says in one anonymous survey of several thousand world-class amateur athletes, up to 57 percent admitted to using performance-enhancing drugs in the past years. According to this, it can say the athletes may be getting away with behaviour that, for better or worse.
Therefore the athletes will never consider as victims even knowing that they are aware what they do besides the test will always be one step behind the perpetrators.