When you hand wash dishes do you do them perfectly all the time?

i have a a big family (5 adults inlcuding myself) and i am the only one who does dishes so I do about 50 dishes a day (not kidding)..is it normal if 1 or 2 dishes don't come out totally spotless once in awhile..like say 1 dish a day? and i mean maybe there is a little stain from a food on the dish..does it happen to you or am i just a bad dishwasher? plz no comments on how others should help do dishes and stuff i know i know but no one else will do it..so just plz answer my ques.