I have lost a good amount of vision in one eye due to glaucoma, in the last several years. Because of that, I tend to run into things and people, and get disoriented easily in a crowd. It’s also hard keeping up with walking due to herniated discs which I’ve been rehabbing from over the past 5 months. So, I no longer have the stamina to keep up, can’t see well, and can’t trust my back to hold out.