JS, I am fighting the urge to do a Rick-style lecture :) I've come to a bit of a realization about myself. Where my head is at right now, my answer is VERY easy: if she gives me my walking papers, I pretty much move on; no matter how much I tell myself how great the sex was and how irreplaceable she is, the fact is, over the years I've found it's not that difficult to replace anyone. I'll also note that you've had more DSes in the past couple of years, than I've had ATFs, which means it's even easier for you to find replacements than it is for me (and yes, if you have more DSes than most guys have ATFs, that does dilute the brand, son! lol).
Years ago, coming off the separation with my ex-wife and re-discovering the wild world of strip clubs, I was exactly where I think you are now: dignity and self respect were nowhere near as important to me as wild sex with a super hot chick, so I rationalized away any treatment I received, to give myself permission to pursue more sex. Looking back at it, maybe wild sex is just what I needed more at the time, and maybe that's what you need more of now. I'm currently way on the other side of the scale, where I'll either be treated according to what I believe my worth is, or I'll walk and find someone else who will treat me the way I expect... and although I think it's important that everyone end up in that headspace, if you're in the opposite headspace right now, no one is going to talk you out of it anyway