There was a study done in the EU a few years back that compared how much physical activity people got with E-bikes compared to regular bikes. The study found that people use E-bikes more than regular bikes, and for longer trips. So the gains are about the same for both. But higher of course if the E-bike replaces a car. https://www.sciencedirect.com/science/article/pii/S259019821930017X

Or maybe it's a liquid? https://english.bouletcorp.com/2015/01/16/heavy-light/

Though I believe researching slowing or even stopping aging is valuable, I always wonder how social development would continue. How would society look in 500 years if people of today could live that long? How would society look today if people from 500 years ago lived today?

I think the main reason behind this policy is EU law on refunds. Both GOG and Origin have a refund policy, and have for some time, though it seems Steam's policy is more favorable to costumers. A two week refund has been common in Europe for many years. I don't see how to handle abuses of this new policy is any different than any other business that has to deal with refunds.

I refuse to listen to music on anything other than plasma arc speakers. How anyone can stand music without the smell of ozone as intended by the musicians is beyond me.