Yup, I've thought about giving up on talking far more times than my fingers can count. I too suffer from clinical depression and I'm extremely self-conscious, so whenever someone makes me self aware of my stutter be it directly or indirectly, it only makes have more and more blocks. When one stutters, your face muscles, your throat muscles, your vocal chords, your brain, they get tired you know. Having a stutter is incredibly tiring. You have no idea how many times I've considered learning sign language and just not talking ever again. But I've never actually done it. At the end of the day, I do not know sign language and no one near me does, so I have to talk again eventually. But there ARE days on which I just... choose not to speak. For the most part that is. Sadly I do not see any improvement when I start talking again after many hours of staying quiet lol