I'm a Software Engineer with the same condition as Mats (Duchenne). There are many others like me as well with in this and other professional industries.
Severe physical disability isn't a complete social and economic dead end. But it is a tough path that I wouldn't wish on anyone. I can say that a "normal life" does still seem to be largely out of reach for us. The worst of it is by far the lack of independence that arises from needing care around the clock. But it's definitely not hopeless. I'm lucky enough to have a good community in my workplace, and very enjoyable work to fill up my attention. This prevents me from thinking about disability too much.