Are our Parents Retirement our business?

Yes, given that they've also raised you up with their own finances, I believe it's only right to return the favour once you've gained some financial freedom yourself. As a start, perhaps you can look towards helping them manage their budget and set aside a sum of their savings each month? And check whether they have insurance coverage too, otherwise bulk of the financial burden from health expenses might potentially fall on you.

Of course! No parents no us. It’s our duty to Ensure they retire and live well 🙂