I wouldn't say that I've ever seriously considered it, but I did go through a serious bout of depression for a few years a little while back and, if it wasn't for my family//friends/girlfriend, I'm sure that I -would- have seriously considered it. If that makes sense.
The key piece of advice I'd give is to think about how it would effect other people rather than just yourself, if you have a single person in your life that loves you and you could honestly do that to them then I'm not really sure what to tell you. Suicide is the most selfish act you can possibly do.
Also, I find that not believing in an afterlife helps. No matter how terrible my life ever gets, it's still better than not existing at all. (Not trying to start a debate, and I appreciate how some of you might find that outlook even more depressing, but I find it really uplifting.)
The key piece of advice I'd give is to think about how it would effect other people rather than just yourself, if you have a single person in your life that loves you and you could honestly do that to them then I'm not really sure what to tell you. Suicide is the most selfish act you can possibly do.
Also, I find that not believing in an afterlife helps. No matter how terrible my life ever gets, it's still better than not existing at all. (Not trying to start a debate, and I appreciate how some of you might find that outlook even more depressing, but I find it really uplifting.)