It is not okay to disrespect someone's home.
John just started his own interior design firm and is meeting with a new client.
John wants to prove he is good at his job.
John comments on the lived-in charm of the living room.
John laughs at the decor in the client's living room, pointing out all the things he will change.
The client feels respected by John and hires him.
The client decides to hire a different designer.