DH and I plan on our kids going to college, and we will allow them to live with us rent free for as long as they are in college, but they will need to hold a part time job. If they don't go to college they can only stay with us, for free, for 6 months, after which they can move out or pay rent. Either way they will have certain rules to follow also.
So do you have a plan for your kids after high school?
Yep. We have told our kids (though most of them are too young to understand) that they can live with us rent free after high school if they're going to college full time. If they want spending money for other things (outside of college, we'll help pay for that) then they have to get a job. If they're not going to college and they're just working then they can help pay some bills around the house.
However, we also plan on travelling a lot once the kids are grown. We want to buy an RV and travel around the US. We'll keep the house, of course.