There are two things. First its a matter of having treatment adjusted which is definitely something to speak to your psychiatrist about. Secondly are any real life issues which can and should be discussed with a talk therapist. Every person's life has its moments of despair when there are traumatic events but with bipolar or depression they occur at times when things would otherwise be settled so its a complex issue but it does have solutions.
I bet whether life is worth it or not is a difficult question to answer. My answer though to this question depends on the situation. If i have kids say - though i don't - then life is worth living because running away will complicate life for them, so i will an egoist should i desert them and indeed it isn't of their mistake to exist on the contrary it's me who made them. Meaning it's me who has done the mistake then leave someone else to bear the consequences.
As to the 2nd question, it's much easier to reply to. Whether life is worth it since you are NEVER happy. Being never happy is wrong, for nobody is 100% happy or 100% unhappy. Happiness is a state of the mind. Onassis daughter committed suicide for no reason in my view, yet she had her reasons, and sure others will find her crazy. The doorman in my house is sooo poor clean the stairs with cold water in winter and is soo happy, when i look to him i find him always smiling. Sure he must have a reason for that. It's called contentment. Nobody is happy otherwise we would find someone called Mr Happy which doesn't exist. If you add up all the good things you have and the bad ones you will find the sum equals to the same sum others have. People in my country laugh when they see a person so sad because his dog died, yet i know people in europe who committed suicide because their pet died. No measure exists for happiness. In my view so long that you sleep with a non-empty stomack, have your kids around you even if they do trouble to you, have shelter, have money to sustain you till the end of the month, then you are absolutely rare in this world.
Incidentally you mentioned nothing about being bipolar or not. If not then you are even luckier than the rest of us