H-less, I am so late to the game here, being out of town for a week. I had to put in my two cents because I was in your shoes just a few years ago. DH could not understand why I wanted a new purse when my old one was just fine. Not because we couldn't afford it, but because I didn't NEED it. We went around and around about it, and finally we agreed that a portion of my work bonus would go into a "purse fund" in a separate account that he would never have to look at if he didn't want to; that way I could spend whatever I wanted without having to ask him permission (something neither of us liked).
I don't know if your DH is like mine, but I think once he sees how happy these bags make you, he will come to accept your love of nice bags. Not saying he will understand, just come to accept it because he wants you to be happy. Ultimately, that is what any spouse wants; I recall a Sex and The City episode when Charlotte gets the puppy in a basket when she is depressed about not having a baby, and her husband says anything that makes you smile like that is okay with me. I hope your husband feels the same way.