Don't know what to do anymore.

I just feel hopeless. I've lost all my friends, my family detests me and I barely have the energy to get out of bed anymore. Depression has been a core part of my life for many years but it has become suffocating in the last few months. Not a day goes by that I wish I never existed. I've been in therapy for two years now, and in that time been on 15 different medications, none of which helped. I'm supposed to see a psychiatrist to see if it is possible for me to do ECT (Electro convulsive therapy) soon, yet I don't know if I want to. Misery and sadness are all I know now and I doubt I could function without them anymore. I really don't know what I should do, seeing as my future seems either bleak or unknown to me, which is more freighting then anything else to me. I want to die, and I feel like the world would be better. I'm sorry if anyone feels like I wasted your time.