Hi Old Surfer,
Married to someone for 26 years is amazing, being married to someone who suffers from borderline structures and behaviors is even more so. I really connect with how you say "Some days I am with the sweetest, most loving and affirming person on earth. Other days I fear for my life (not literally)." This has been my experience as well and I find it so very confusing most of the time. When I found this forum I was relieved to see that I was not alone in my experience of loving a pwBPD, diagnosed or not. I found a lot of helpful answers here, but even more questions, albiet they are questions I needed to ask myself along the way with this newfound understanding. I too have been called crazy for staying with my partner, and told I should have jumped ship long ago. I think you will find may others here who can share in your plight.