Is there such a thing as too many?
Most of my family say 1 pet is plenty but then they aren't particularly animal people and all think I have 'far too many'. My work colleagues are always joking about my "zoo" and I often get tagged in things about having lots of pets on fb too.
I agree with others that if the animals are suffering and your house is a permanent grotesque mess then you probably have too many for you as an individual.
We currently have:
2 large dogs (aged 10 & 11 years)
2 rabbits (brother and sister aged 2 years)
1 small dog (aged 1 1/2 years)
4 cats (two aged 1 year and two aged 9 months that are sisters)
A tank of fish
Its hard work (mostly due to the big dogs as they have very fluffy double coats, shed profusely especially in summer and require plenty of exercise and as much as I love them I wouldn't have the same type again) but they are all loved, well looked after - fed, groomed, exercised, wormed & vaccinated, the youngest dog and all 4 cats are also fully insured. My house is by no means immaculate but I think given the number of animals I have its pretty clean. I've had several people compliment me on how nice my house is and how they'd never guess I have as many animals as I do due to lack of animal smell.
As pets go cats are probably one of the cleanest and least time consuming pets to own so I can see why they are so popular and are often easily kept in large numbers. Here they go out in the day if its not raining and come in in the evening / overnight for snuggles. They sleep a lot, are easily entertained and if short coated require very minimal grooming. Because they go out most days the litter tray is barely used and only for a pee so at most it takes 10 minutes twice a week to clean out. I'd love a couple more but I can't really afford it right now sadly.