Being physically disabled doesn't mean you are useless and have no place in society. It can be quite daunting to find yourself in a situation that has either been with you all of your life, or is new to you. Especially if you know it is terminal or so debilitating you can no longer function to full capacity. A becoming physically disabled can have long lasting mental effects.
This support group is for you, to talk and discuss with others who are in the same situation as yourself. Talking does help, even if it's just to get things off your chest and have someone actually listen to what you are saying and can empathize with your situation, either because they are helping someone they know get through life or because they are suffering the same as you. Only someone going through the same process can fully understand and appreciate what you are going through, rather than cooing sympathetic gestures.