[eezurr]

>what will the retirees (~60+ y/o) do with their time?

Depends on the country. In countries that place importance on family (e.g. central/south america), I assume they will be content with helping their children raise their children (i.e. grandchildren).

In the US the decline of communal activities (including religion), culture of independence, and people associating their identity with their job seems like a recipe of disaster to me. A coexistence of entitlement and boredom creates an addictive poison. If you've ever worked in customer service before, you deal with these people every day.

[ansible]

I've got a dozen hobbies that I don't have enough time for now. Plenty to do, watch and read. I'd probably also have a go at building a greenhouse to grow more of my own food.

[natalyarostova]

I'm right there with you. The world is so incredible!! I could work 70 hours a week on my own hobbies. I've never even though of building a green house; but I bet it would be a ton of fun. There is so much to see and do, how do people become bored and listless.

[dominotw]

Energy and motivation declines with age though.