This question takes me back about 4 years. I was in a very, very dark spot, and someone was trying to talk me out of acting in the heat of the moment. "Why do you care?" I asked.
Now it's my turn to answer that question, both for the people who think it, and the person who asked it.
The truth is, the reason I care is because I know what it feels like to be so low that you can't see a way forward. I know what it feels like to feel incapable of dealing with emotional pain, and using self harm to transform it into physical pain. I know how awful it feels.
I don't want anyone else to feel the way I did, and occasionally still do.
There is very little that I wouldn't do to stop people feeling like that. I know that there are hundreds, thousands, probably millions of people who feel exactly how I felt from the age of 13 to 17. I know that I can't take those peoples' pain away. I just hope that I can help them manage that pain.
I care because there's no way of knowing what those people might go on to do. Look at Robin Williams, or Stephen Fry, or Matt Haig. They've made thousands of people smile, or at least feel less alone. That is invaluable.
You, reading this...I believe in you. Keep fighting.