In my current case, it's being able to speak. You don't realize how cut off you are without it. I can't answer the phone, because I can't talk with the person on the other end, and if I need to call someone, I have to wait for John to make the call for me.
Try getting gas when you can't talk with the attendant or talk to the pharmacist or your doctor or your family.
It can be frustrating, but for me it's temporary. Unfortunately for my husband's good mood (lol!), I'll be back to full vocals at some point. Hopefully in time for the murder mystery this weekend. :)