I just want to say hello OP. Hope your meds review goes well.
I don't want to be too personal and probe, but do you know why you feel this way?
When I was at my lowest, it was clear why. I had an abusive partner, and I still have bad days because of it, they are infrequent, but still there. Is there something specifically that you can't get over, or are in the process of working through. And "I don't want to discuss this" is a perfectly acceptable response 
I also wanted to echo PP, and say, you have no idea just how many people are out there and think fondly of you. A friend of a friend took his own life, maybe 4 years ago. He was in the hospitality business, so quite a few of us didn't know him well, but knew him to say hello, so to speak. When he died, there were, no exaggeration, thousands of tributes at his home. What really cut me up, was how he had ended his life because he was lonely and depressed, if only he could have seen just how many people cared for him and realised he had touched the lives of so many. Any of us would have been there to support him. He had no idea.
I worked with a girl who also took her own life, and she was so funny, so vibrant, but ended up heavily involved in drugs. Ten years my junior. I would have done anything if she needed me, I thought of her so fondly. She wouldn't have known that. I still think of her, and if she'd called me and said she needed help, I'd have been there like a shot. It was me thinking of her, and wanting to invite her to meet up for a coffee that made me track her down on Facebook, where I saw the horrible news.
There are far more people who's life you've touched and care about you than you realise.