Human are not capable of 100% empathy. When you hear of someone being depressed by what you think is something to not be depressed about, maybe you are right, that person shouldnt be depressed, because is not important enough to be depressed about. Maybe not important to you, but it is important to him or her, and thosr feelings are 100% a problem and can lead to depression.  Your parents or your friends do not give you the support you expect, not because they dont love you, but because they see your stuttering as a small thing. And maybe it is, they are right. But you feel sad about it, and those feelings are a real and true problem to be concerned about. But dont blame them, trust me, they too have problems, even if you see them small when compared to your stuttering.  Love yourself, train your speech, have you tried virtual reality? There is chat there. It can help you to get used to environments. Do not wait for someone to heal you, trust me, no one will be there for you in your time of need. No one cares in general. Maybe those families that truly focus on family well being can help in such situations, but is not guaranteed.