I have a funny story about this.......
I work in a shop and one day a new colleague started - a boy aged about 19.
We usually vaccum the shop before it opens and I asked him to get the vaccum cleaner out.
He had never used one in his life and I had to show him how to use it.
I asked him if he ever helped out with the housework at home. His answer - no - his family has a cleaner.
He was from a fairly wealthy family and fairly clueless about a lot of things.
I think it is important to show your children how to do household chores. Maybe one day they will earn enough to be able to pay a cleaner, but until then they will have to do it themselves.