Some people may think that steroid users are cheating whereas some think steroid use is just and fair. However in my opinion, steroid use for bodybuilders is not considered cheating as you hard work is still required in getting the results. On another hand, steroid use in sports is considered cheating because it is not legal in the competitive sports industry.
source: https://www.forbes.com/sites/roomykhan/2017/12/31/doping-in-sports-cheating-or-leveling-of-the-playing-field/#5206693a75ec
Sports
In sports, using steroids is considered cheating due to the help of performance enhancement. This is unfair to other athletes as competition rules state that performance enhancing drugs are illegal.
Bodybuilding
source https://www.t-nation.com/training/12-truths-about-bodybuilding-training
It is the vast opinion that taking steroids in the bodybuilding industry is not cheating. It is because you cannot simply just use steroids and relax at home while expecting muscle growth. With the help of steroids, it assists in speeding up your progress, however you still need to track of your diet and exercise twice as hard to obtain results.
Steroids In The Fitness Industry 