The difference with Kim on RHBH is that Kim is an admitted alcoholic. She realized she needed help, and she's now sober. Dorinda will never admit that she has a problem.
It used to be fun to watch Dorinda get drunk, wave her arms all about, yell that she "Made it Nice!!!", and be sober the next day, completely lucid. But now it's fallen into tragic territory, where it's like watching Grey Gardens unfold right before our eyes.
Adding Sonja, Ramona, and LuAnn's collective attempts at proving their continued desirability, and it's just a sad thing to watch.
Sonja is an unfortunate shadow of her earlier seasons' self, with her new tiny apartment, multiple failed businesses, and she has unfortunately lost control of one asset I always admired: her stunning figure.
Ramona is just a sad person who never had love from her father and always felt less-than, despite all that many years of therapy could have provided. Seems she chose cameras rather than therapy couches to prove she's this hot, sexy thing, bringing any man who shows the tiniest bit of interest onto camera with her. She surrounds herself with "her 60 best girlfriends" to prove how much she is loved, when I'd be willing to bet she can't count on one hand, any of those friends who would still be there if she became flat broke, or had a major health issue.
LuAnn, while still gorgeous, is also a shadow of her former Countess/Hamptons life self. Auditioning zero-known "comedians" for her show where she talk-sings a few songs, after we publicly watched her non-lationship with philandering Tom implode, and her subsequent jail time implosion....well it's just a sad, sad thing.