Not to mention they cost less, don’t wake you up when they come in pissed, don’t have their mates around drinking all your beer, don’t complain because you want to watch the football or the news rather than more old episodes of Friends, don’t set the smoke alarm off by trying to make cheese on toast by putting the toaster on its side, don’t eat all the food in your fridge, don’t stink the house out from a three hour shit and don’t blunt your razor by shaving their legs with it because they’ve left theirs at uni.
Also, they don’t argue with you.