Are you asking if you could hold it up on your own? If so, should you have to and at what cost to yourself?
This is the big thing that keeps me grounded on the bad days. I tried. Very hard. I heard her concerns and actively would try to make changes necessary to improve the relationship. But it was all me. She was okay with me getting angry, realizing where I went wrong, and then actively trying to change so I wouldn't react like I used to. But that was all on me. Without your partner taking active steps to work in the relationship you would have eventually burned out. I know I did. And then god forbid you are in a situation where you need genuine support the odds of you receiving it were slim to none.
Sometimes I peak at the other forums and see people still in relationships with people and it looks draining to me. As much as I miss her I was exhausted. She used to tell me her ex said to her "You are exhausting." Well I never told her that but I agree 100% with it. It's not a life I want to live anymore nor did I ever really want to live it. She would live her life and take care of herself as she needed to and I would always be at her beck and call and try my best to find some time for me while always making sure that her needs were being met. When I failed or couldn't keep my emotions on the side anymore she would want to go on a break. A subconscious way to run from the work that could be done together as well as "look what will happen if we argue".
These questions are normal. Sometimes cold hard logic is what's best in a situation like this.