My dad is 81, bricklayer by trade and had his own small construction business, he worked 6 days a week. The physical strength certainly helped him for a good while into his old age, but walking is becoming increasingly difficult (now using a walking stick, very slow). He also fell twice in the last few years.

In my research i found this clever stair-lift solution https://assistep.com It's mechanical, and helps prevent falling, also encourages to further "workout" and contnue to walk up and down by himself. I contacted this company to see how expensive it is - definitely way more affordable than a chairlift and a more "active" solution.

But here is the bummer: He doesn't want it. Too stuborn, and just turns me down.