"My House, My Rules" is a phrase I despise. I know that I am going to get a lot of disagreement on this, but hear me out.
Parents use "My House, My Rules" as an excuse to control the lives of their aged 18+ offspring in ways that are quite honestly none of their business. The young person's social life, job, eating habits, and love life somehow become entirely the domain of their parents to decide for them. They don't want you to be vegetarian? My house, my rules. They don't want you to date someone of the same sex? My house, my rules. They don't want you to date anyone at all? My house, my rules. You want to read Noam Chomsky, talk to your best friend since childhood on the phone, or be allowed to leave the house, ever, and they don't want you to? My house, my rules. No, it isn't always that extreme, but sometimes it is. And, honestly, someone who is a legal adult should have the right to leave the house once in a while, even if mommy and daddy are afraid their little darling is going to get hit by a car, do drugs, have icky dirty sex, or come into contact with Socialist propaganda. Really.
What galls me the most about parents using this method of control is that the ones most likely to do this to their kids are also the parents who fail, either purposely or inadvertently, to teach important life skills and independence to their kids. They resist efforts on the part of their child to move out and become independent, and will often continue to try to exert control even after the child has moved out. Because, really, these types of parents aren't trying to maintain order in their house with the superficially reasonable-sounding "My house, my rules"--they are trying to cling tightly to their role as Persons In Charge Of Johnny Or Suzie's Life. They do not want the child to become independent.
When the kid finally manages to grow some independence, despite the best efforts of his or her parents, and move out, mommy and daddy will consider this to be a betrayal. You're CHEATING, it's not FAIR for you to LEAVE US. You just want to move out SO YOU CAN HAVE SEX AND DO DRUGS DON'T YOU?! The guilt trip is laid, often with promises to loosen the invasive and controlling "house rules" if the kid comes back. They're lying, of course, and as soon as they have the kid under their thumb again, it's the same old shit, right down to the guilt trips about, "We don't charge you rent! (but we aren't going to take money if you offer rent--your rent is your compliance with our bullshit)." Once again, the young person's private life disappears, and they have no peace until they harden their resolve toward the manipulation and violations of privacy, move the fuck out, and turn a deaf ear toward the inevitable pissing and moaning that results from doing so.
So, yeah, that's how I feel about that.