My husband and I always end up arguing or in our current situation I actually MOVED out and made my SD (19yrs old) move in with my husband. I have a BIG family home. I have 3 grown sons and 2 daughters of my own. I also raised my 2 SD's now 18&19. My kids ALL paid rent as soon as they turned 18 in my home. Well when my husband and I moved out into what was supposed to be our new beginning (as all are kids are grown ups now). My SD stayed in my family home (mastersuit) with the agreement that she would pay $200 @month which includes $40 for her cellphone on our account BTW.