Yes, understood. I suppose that's the reason many of us (myself included) can get into a relationship that we know is not good for us on some level, but the fear of losing the relationship (and being alone for a time) seems worse, and so we can get stuck in the same pattern for a long time.
You'll know when you are ready to break that cycle though, and there is just no way to know how it will turn out either way if you do decide to make some changes.
What I can tell you is that re-claiming your sense of security (or finding it for those of us who struggle with that), feels overall much better in the long run
