We had them for the kids, and my husband liked to have them around too, although I was usually the poor mug who ended up looking after the things. They were well looked after and God help any of the kids if they mistreated them in any way.
I put my foot down when the last dog fell off its twig in 2002, I did all the walking of it, feeding, grooming, worming etc and I had got fed up with doing all that so insisted there were no more dogs. We have had about 36 cats and most of them disappeared into some blackhole or other, probably getting shot and quietly buried somewhere, there is a shoot in the field next door to our property, a waste of cat food so I put my foot down about them too.
We continue to keep gerbils (only one at present) as organic paper shredders, and very useful they have proved to be too. They shred personal papers much better than an electric shredder! One popped its clogs the other week, and had a state funeral and grave stone in recognition of 3 years hard work!

I like to have a tarantula spider as I am quirky, and it is talking point. The rest of the family think I am crackers so it lives out of sight in my bedroom!
We have a tank of goldfish too.