Kicking out kids at age 18, 20, etc

Do you ever plan to kick your kids out at a certain age or charge them rent?

Provided that my future kid is a productive member of society (is working and/ or in school) and not violent or a drug addict or something, as long as I can afford to do so and have the space, they will have a place to stay with me rent free.

If I need them to help with expenses, then I will ask that they help. And if I can't afford to have them stick around, then I won't. But if I can, then that is a big privilege and I will let them take advantage of it.

Also if they deliberately aren't working and are just living a life of leisure then I won't let them stay either. And if they eternally are working minimum wage jobs without going to school or training then I will push them to make more money so that they can move out.

But if they are working or studying, saving up, paying off debts, being responsible, etc. I will always let them live with me. Also if they have some medical issues then they can also stay with me as well.

Also once they reach a certain age, like 30, I will encourage them to move out. I am living with my parents but my goal is to buy a condo at age 30.

I will encourage my kids to save up and reach a down payment for a home or condo at around age 30.

Thoughts?