Is It Wrong to Want to Die?

Today my sister and brother and I were running errands and my sister had bought some gum. She turned to me, because she knew I didn't like people chewing gum, and asked me if she could. So I told her that if she did, I would most likely ignore her or avoid her so I wouldn't have to hear her chomping, and she told me that I can help my reaction to the sound. But I argued that I couldn't, and that I was sorry I wasn't normal and not like her and am not able to handle noises like gum chewing.
This is especially hard for me, having to rob people of their right to, like, chew gum, because I'm a people-pleaser and don't want anyone to be unhappy. I feel like I don't mean anything. I mean, if I'm causing everyone around me to give up certain things for a few minutes and making them uncomfortable, wouldn't it just be easier if I didn't exist?
And I really don't want to have to live my life like this. I don't want to have 4S, but I do. It makes my life a living hell. This problem is so bad that I want to kill myself. Literally. The thing that sucks the most is that nobody understands, and nobody cares one bit.
I think my family would get it if they knew it was so bad that I wanted to die and seriously had suicidal thoughts to escape the situation. It might snap things into perspective.
But I don't want to tell my family that I really want to die. They'd put me on suicide watch or something.

Thank you, God, for making the mistake of making me. Really.

-Steph