It's wrong to freeload off people.
Tim moved back in with his parents after graduating from college and getting a job at Walmart.
Tim wants to spend his money.
Tim pays his parents rent and contributes to the grocery and utility bills.
Tim spends all his money on going to bars with his friends whenever he's not working.
Tim's parents feel Tim is being very responsible, so they buy him a car to help him commute to work.
Tim's parents don't think Tim is trying to improve his life, so they kick him out of the house.