imho, chores are part of being a family. I think part of the attitude that teens and young adults have is that hey won't do something unless they are getting something for it.
Now say if my kids 8 and 5 know that the book fair is coming to their school, and they want to have money to purchase something, then I give them "extra jobs" to equal the amount of money they would need.
So they each have asked for 10.00. In order for my 8 year old to earn that, he has helped fold the laundry today, has swept the kitchen every night this week, and has to vacuum the living room three time. This is on top of his regular "Responsibilitie s". My 5 year old has had to help with down the table and chair after dinner all week, set the table for breakfast and dinner.
This is on top of keeping their rooms tidy, play room tidy, helping care for the animals, and generally picking up after themselves.