Heres' My (eh hem) man take...
Its sounds like Your DH is a control type person, while You are the passive in the relationship? Most here know how a pack works?
Personaly, I'd find out more about his objections. If it's a small dog thing, try and reassure him enough to agree to a trial run. Maybe babysit someones dog while their out of town?
It only takes a couple of days, and these little fur balls will melt his heart.
I NEVER thought I'd be a small dog person. We grew up with Shepards and Malamutes. But after adopting our first Yorkie, I don't think we'll be without one in our house again! (Andy's sitting on my lap as I type
)