Oh, I could list my mental problems here all day, but let's sum it up and say that I've been suffering from untreated depression for some 4 years.
So I pretty much hate my life.
I've been very close to suicide a few times, if you wish to know, and that I will most likely do it sooner or later if this goes on.
There is no actual "event" ranging from death to annoying people that would crush my desire to live, or what's left of it, so thus the above.
i am sorry to hear of your depression, it probably doesn't help much but the truth is you are not alone and there are many people suffering with depression also.
As for you possibly taking your life, i would very much hope that you do not do it, life can be hard and difficult, but it can also change for the better, as long as there is the promise of another day there is still hope for things to change, you could meet someone or find an interest that will re-affirm your life, happiness could be just around the corner, heck aliens could land on the whitehouse lawn tommorrow, but there is no hope for change if another day cannot come.
This gentleman here has some powerful thoughts on the subject, he is a gamer and has been through rough times.
http://www.youtube.com/watch?v=Rlw7qPxaLw8&feature=channel_video_title
i very much hope you seek help for your depression, things can and do change for the better.