Some of us are no fans of strangers touching our clothes or seeing the interior of our houses. Very few people in my area have part time workers, it is either you have a full time maid(s) or you have machines doing the work for you.Another option is Kisafi and the likes to do a thorough cleaning every three weeks or so.
Plus, cleaning the house with an automatic mop and a tile polisher plus vacuuming the carpeted parts takes like what 40 minutes??
Got a top load semi automatic, works just fine with me. Not power hungry as some chaps mention here. Brand MIKA.