Your hubbby sounds just like mine!
For
FIVE years I heard this same type of ultimatum, "if he got this or that" or if I could find one for free or maybe when I turn 40 then it went to 60... He had these rules about animals in the house...blah blah blah
I finally wore him down because I was turning 40 this year and nothing else would do as a present, the minute he gave in I was searching for a puppy and got Pita that weekend before he changed his mine
I think I just wore him out, so never give up! Up until the minute I went into the breeder's to pick her up he was still grumbling, THEN I brought her into the car and he has been in love ever since, he even argued with me the other day about WHOSE dog she was! (she's his according to him) lol!
So never give up!! Wear him down!! If mine can give in yours can too! He'll be happy he did!