Nope, never did.
No matter how depressed I was, and whether I thought about ending my life or not, some part of mine always wanted to have a long life. I guess that's natural self preservation. And to have a long life, you have to take care of your body. You have to know what's good, what's bad, what's temporary and what lasts.
Also, somehow I always hoped that things would turn better in the long run (and they did). And I feared that scars I did to myself and that wouldn't vanish would be in future like some sort of anchor, dragging me down, preventing me from becoming happy, by reminding me on the stupid things I did when I was younger. Forever. Once things become better, do you really like tht thought of having to decide whether to hide your body or beeing stared at? People looking at the scars, having immediately made up their opinion about you? And that's not a positive opinion.
So, for me, I came to the conclusion that the price of cutting is too high. To pay a moment of relief for an entire life of additional avoidable difficulties.
I mean, people of all ages have depressions. Teenagers and adults, for many reasons. But it's nearly only the teenagers who cut themselves. I think the answer is, and I don't want to insult anyone, that they lack the wisdom to see how far into the future their actions extent. That every cut now is reducing the chance of becoming happy. And some of the youths might like that thought, but will you still like it 20 years later? You don't know that. But you're deciding upon that now.
Maybe I also dislike cutting that much, because I had friends who did that. And I wanted to help them, obviously, but couldn't, because they didn't want help. And I got angry on myself, for not beeing able to help, angry on them, for not hurting me with their actions as well. It made me feel helpless, and gave me the feeling that they also gave a **** about me, or enjoyed even hurting me by cutting themselves. And that's just messed up. Cutting hurts not only yourself but also everyone for whom you are important. And that's not how you should treat people.