kinda like alot of parents actually, they expect to be paid when they retired, or retire for free or moving into your house. this is what op parents are saying. its a wierd mental gymnastics. basically saying" oh way paid for your’re child hood, we should be able to use “you” as our retirement. sounds super transactional to be honest, usually parents dont say that to kids, they are required to do this for kids. unless they are loaning them money/rent to op when he/she was an adult, that would somewhat different.