I think going out into nature adds more physical factors (ham radio and video games are both physically pretty passive hobbies) and more sensory input, which gut feeling says are overall better.
But generally speaking, hobbies are good. That said, I wonder why video games don't seem to be more popular as post-retirement hobbies.
Video games that would involve that level of sensory engagement also generally require a level of hand-eye coordination that’s tough to achieve at that age, or at least that’s my completely uneducated guess.
Also, speaking as someone approaching retirement age, sensory overload isn’t particularly enjoyable.
> I wonder why video games don't seem to be more popular as post-retirement hobbies.
I think it's a generational thing. Video games were fully entrenched as part of culture starting late gen x/early millennial. I expect to see elder gaming being a thing in the years to come.
You can also enjoy ham radio outdoors through SOTA (Summits On The Air). Going on a long hike while carrying 10 kg of radio equipment, setting up your station at the summit, and making contacts with other operators is a physically demanding but incredibly rewarding activity.
Ham radio does have a lot of outdoor activities. Parks on the Air, Summits on the Air, and to some extent, field day. Some people just operate from their car, others do full day hikes to the spot they setup at.