A couple of years ago we started thinking about getting a pet for our dds (12, 10 and 6). They really like animals, as do I, I didn't grow up with pets but really wanted one. After considering various furry things in cages, rabbits, guinea pigs, hamsters etc, we thought about getting a cat. The dds were really keen and I always loved cats as a child.
The problem was dh. He didn't grow up with animals and doesn't particularly like them now. However he reluctantly agreed to getting a cat as long as a) he didn't have to do anything, and b) the cat stayed out of the kitchen.
We adopted a gorgeous kitten from CP who is now 2 years old. She is an absolute joy, the dds love her as do I. It's been a revelation to me how much you can love a pet 
However, dh won't stop moaning about the cat.
'I don't want a cat'
'Can't we get rid of the cat' etc
I have kept my side of the bargain, he never feeds her, I organise vets visits etc.
I think he's BU to constantly moan when he (albeit reluctantly) agreed to the cat. He's driving me mad.