I have 3 cats and 2 dogs. I can't explain WHY I have cats, other than I grew up in a huse with cats. One would ALWAYS be sleeping on my bed, so when I moved out on my own, I had to get my own cat to sleep on my bed.
and yeah, my cats are way more low maintenance than the dogs. when they want to be bothered, they let me know, and the rest of the time they put themselves up. I don't have to worry about having mice or other critters in my house, either. The worst that could happen is one brings in a bird every once in a while.