So while the long-term benefits of exercise are well-established, it’s up to the individual whether the benefits outweigh the cost for them personally. And in the context of disability, some of those benefits might not apply or may be counteracted by the exercise exacerbating a chronic condition.
The benefits of exercise are great enough that I would encourage people to try to find an activity they like and accommodates any disabilities. Unfortunately, this isn’t feasible for everyone.
Edit: fixed an incorrect word.
I mean if you have run for 5 months and haven't progressed towards any of your goals ... then it seems like your routine needs to be improved. Or maybe you want a different activity that would help you reach your goals.
For most people, if you don't enjoy running just to run, the reward would be the progress towards your goals.