depends... people have different opinions on this.... how much do you need?
i never paid rent, i moved out when i was 18 but from 16 - 18 while i was working my dad wouldnt take a penny, i did all my own washing and cooking and cleaning up etc but he wouldnt have taken a penny off me or my sisters, in his eyes he didnt need the money, he was very well off and we were 3 very independent girls, so dont think he saw a lesson in it either,
i live with my partner now and my 7 yr old and i can see me being the same with mine, but then again if she was lazy and bummed around the house and didnt appreciate the value of money i think i prob would take rent but just for the purpose of an lesson of independance, tho if she is anything like she is now when she is older she is going to a very independent woman lol
my partner on the other hand was spoilt something rotton and i remember when i first met him his mum still tidied his bedroom!!! but he paid �50 a week and she did everything for him, washed his clothes, cooked all his meals!! and when he started plumbing she tried to take �100 a week, which to be fair is way too much for living with parents,
anyway depends on your finances and what he does for himself etc,
i know some of my friends still live with parents and pay between �20-60 a week
xx