Then why not let all fighters use PED'S, right? Why show any concern for their long term health, right? Are you aware that PED's affect a fighters heart and liver?
The heart is a muscle, and PED use can cause it to grow to abnormal sized, and it then cannot pump blood properly throughout the body, not allowing organs to perfuse enough oxygen. A study by healthandresearchfunding.org showed that when athletes who admitted to PED use had medical exams done later in life, 80% showed abnormalities in their liver. The liver can't break down the enzymes, so they build up and cause issues.
So yes, they should be suspended to hopefully deter other fighters from using them