was in the hospital 150 days, 21 chest tubes total and told I probably wouldnt leave the hospital al

I was in the hospital 150 days, 21 chest tubes total and told I probably wouldnt leave the hospital alive, didnt guilify for a lung transplant either....fastfoward 2 and a half yrs im still here. Ive been on hospice the whole time since the hospital released me, i came home with a tubes in each lung, and only have about the size of a silver dollar left of my right lung. And after a yr on hospice they were able to remove the tubes finally Im on 6 liters still, i go up n down. Im stage 4 COPD n Emphysema. My question is can I exercise, my hospice team says no but I keep packing the pounds on and I harley eat. I cant walk without oxygen, i even have to sleep with it. And if i haven't died yet, why am I still on hospice? Ty. If i have grammar issues blame it.on theses mean ol meds im on. Lol