This is interesting. I think that all ages have their pros and cons. And both depend on the part of the planet you're in. I can't say a country because even in the same country differences csn be surprising.
I can only speak about my country, Argentina. Here seniors are considered unproductive and a waste of money. You contribute to a national fund during your working years. But it has been used for many other corrupt things and it's almost in default. The same happens with senior health care. There are strikes for indefinite lapse time and again because the health services are given but the State doesn't pay. The debt is huge.
So we have a deficient health care service and we are paid - the minimum, if you were an independent professional - 7400 pesos. But the cost of living (without considering meals, hygiene or luxuries (like cinema, etc), is 15000 pesos. Rents are about 5000 (one room apt). And nursing homes - hell on Earth - are 25000 (the cheapest), or the statal ones... (and they take your house in exchange and rent it). As you can figure out, old folks here can't warm up their houses, can't have a good health care, can't eat healthy. In my case, for being a new retired outcast, I'm moving. I've got to sell my house for less price to leave in less than a month, or I'll be in default...
I've tried to convince my peers to rebel, for example, going on strike about looking after their grandchildren while their parents work. That way, they would have to pay for a nanny and would see how much we should be paid. Because here every union asks raises for themselves and it seems everybody was born out of a pumpkin! But they answer they have already livrd their lives... GRRR!!!
So, while it's true you have the time for yourself to enjoy and do all you wish (for instance, I started Physics at Uni), you have to be able to survive too (I can't even buy photocopies. I take pictures of the exercise guides with my cell phone...
Sorry... you've put your finger in my wound, hahaha!!!