I also agree with Goq.
In addition, you also have to keep in mind that to some extent these things have to do with personality and what the individuals are used to.
So even phrasing it Goq’s way may not be enough for some people. There are some people who are very chilled-out by nature and may themselves have a very open home (and maybe a lot of their friends are like that), so the concept that some people have a different mentality may be very foreign to them and it may have to be expressed much more clearly. And even then, you may have to be accept the fact that they may not “get it”.