My guys were all happy to help at the age of 3 or 4.. once they were old enough that it was expected of them the novelty wore off

I do think it helps though for them to learn that it's just a part of life, kwim? You may not like it but it has to be done.

I grew up (until I was 12 anyway) in a family with 4 of us...2 working parents, just me & my sister & all the housework got done on the weekend. I had to do the dishes every night, but apart from that there just wasn't a lot of mess, or cleaning to be done (well that's my memory anyway). But I didn't have an example of things being done a bit every day. It took me years to work that out on my own!
When I moved up to live with mum there was just her & I & my other sister - & mum did everything pretty much. I mean I helped out with dishes & stuff but I never gained any understanding of what's involved in really looking after a house...

But then, I don't know if my kids do either though.
Maybe it's something that comes after you have your own home to look after...