As someone who’s dealing with older in-laws and lost both my parents I have a perspective on this…

Your parents are in good health now… but that could change and they might need the money for nursing care.

Even that big pile of money gets whittled down pretty darn quick by skilled nursing homes. What if one or both of your parents develops alzheimers – and needs skilled supervision for many years. They might not be able to pay for it. They would have to liquidate and burn through all their assets except their primary residence – including the rental home you’re living in – before medicare would kick in to cover the nursing home expenses.

My in-laws are an example of this. Retired in their 60’s… both had pensions, house was paid for, life was good. Then my father in law broke his hip. During the surgery something happened and he has aphasia (diffused brain damage). He’s in a wheelchair now. All of their plans, expenses, etc have changed dramatically. Rather than staying in their lifelong home they had to move. Recently we built a companion unit (detached granny flat) that is handicapped accessible – and they moved in. Not the plan we had when they retired – but it works for us.

Your scenario is great for the most optimistic scenario – but it does not account for the twists that life throws at us.

It also strikes me as pretty selfish. But maybe I’m missing something.