At one stage when i was growing up, we had 11 cats (with the kittens - but they stayed for a while) and a rabbit, two guinea pigs, an aviary filled with birds - zebra finches, budgies, quails and a few other species, frogs and tadpoles, a dog, and the usual insects and spiders found in rambling back gardens in suburban australia. on eo fthe best things my weird family did, was allow a virtual free-for-all when it came to having animals. in our feral family they were regarded as an essential part of the familial fabric.
if you can give cats, or any other animals a good and loving home...then yes. have as many as you can give loving life to.
i now have a devon-rex called william (that weird fur-less breed, made famous by the Austin Powers dr. Evil (?) character.)
beofre William, i had another devon rex called popper. William sleeps in my bed in winter and in summer prefers a cooler context for naps. (it get very hot here in summer.) sometimes however, he does invade my space a bit because of my sensory overload problems, but he and i have it worked out and he's great wtih that.
he is spoiled, intelligent, and adored, and along with my dog peg, who also sleeps in my room - is an essential member of my family.