I have been on meds for a few months now but they haven't really helped. They're just to keep me stable, not well. I've also been doing therapy, but despite all that I still feel done. Nothing really gives me any joy. Like I said in my post I've been dealing with this for years. I find it difficult to believe it's just biological factors, but if it is then I guess I was just unlucky.
Its not limited to biological factors. I said also there are many factors that don't look big. Everyone makes life looks like a candy while its not. Many of the tiny details can make one depressed. Studying for example can make depression but not every student will be depressed, apply this to the many things in life and there will be many reasons. Not to mention how life itself can be depressing, even if one has extremely good conditions, depression can occur. So its most likely a mixture of many factors. But there are always the tiny or subliminal details, accumulated with time and they can make it happen.
You know more about yourself and your decision about life or not and you are the only one that can decide. If you have anhedonia, there are ways but sadly long term to deal with it.
I'm not talking without experience but having 12+ years of depression and other problems. Not to say that I compare but just that I'm not alien to the topic. I had many problems before that but regardless of that, it just happened to me at a random point like suddenly falling from sky and not related to the previous problems. I precisely remember when it happened. I stopped asking myself why or if, this life is all about uncontrollable factors that affects us.