Struggling with a Depressed Partner

My boyfriend and I have been together for 2 years in March and I can't do it anymore. Every day I see things that I couldn't imagine dealing with for the rest of my life. He has major depression and was abused growing up and even though he has had therapy for years he is really reluctant to work on himself or try to get better. We fight every day if not twice a day, even on good days. I am just tired of apologizing for everything stupid thing just so I don't have to fight with him about something else. I feel like I will never be the person or get the person that is healthy. My main hope is that I am buying a motorcycle and planning a trip possibly overseas. My main fear is getting depressed.