Sure. Steroids are used for HRT(Hormone Replacement Therapy) where a guy for example has low testosterone levels. By giving him test injections to bring them to normal levels, you aren't adding years to his life unless you take into consideration what kind of years he would have without it. With HRT, you are looking to achieve a better quality of life. I hope you don't think that Decca,Winstrol are going to add years to your life. They're not.
When you take steroids, you are putting stress on the body.We're born, we grow old and we die. With AAS, you are asking your body to grow at a different rate. Your body has to now support what has been changed. You have heard people say everything in moderation. When you drink, you are putting stress on the body. Fast food, smoking, staying out until 6 in the morning partying (been there), all speed up the aging process. If you are going do AAS on regular basis, clean up your diet, don't smoke, drink in moderation and don't stay out every night. Eliminate as many outside stressors to your body.
If someone wants to correct something here, please do.