Well…
from experiance of owning both…
Cats generally do not slobber all over you (with the exception of Stupid Black Cat Mk II who dribbles like a leaky tap), and when they are sick, they don’t generally produce enough to fill ALL your shoes at once (which was gross).
However.
Dogs do not generally leave dead rats in the kitchen for you to find at six o’clock in the morning. Nor do they scream the house down because they have got themselves stuck to the carpet (Stupid Black Cat Mk II again…)
Swings and roundabouts really :-)